Jim Carrey has some very strong opinions about whether comedians should speak up about American politics -- and he's sharing a provocative "dream" he had about President Trump with ET.

The comedy icon spoke with ET at the premiere of the new Showtime comedy I'm Dying Up Here, where he addressed the controversy surrounding Kathy Griffin's recent photo shoot in which she held a facsimile of President Donald Trump's severed head.

"I think it is the job of a comedian to cross the line at all times -- because that line is not real," Carrey, 55, explained matter-of-factly to ET's Leanne Aguilera on Wednesday night, just hours after Griffin was fired by CNN.

WATCH: Kathy Griffin Apologizes For Controversial Donald Trump Photo: 'I Went Too Far'

"If you step out into that spotlight and you're doing the crazy things that [Trump is] doing," Carrey continued, "we're the last line of defense. And really, the comedians are the last voice of truth in this whole thing. It's impossible to get away from it."

See recent photos of Jim Carrey's drastic new look:



29 PHOTOS Jim Carrey out and about See Gallery Jim Carrey out and about MONTREAL, QC - JULY 28: Jim Carrey attends the Just For Laughs Comedy Festival 2017 held at the Hyatt Regency on July 28, 2017 in Montreal, Canada. (Photo by GP Images/Getty Images) TORONTO, ON - SEPTEMBER 11: Jim Carrey attends the 'Jim & Andy: The Great Beyond' premiere during the 2017 Toronto International Film Festival at Winter Garden Theatre on September 11, 2017 in Toronto, Canada. (Photo by Phillip Faraone/Getty Images) TORONTO, ON - SEPTEMBER 11: Actor/comedian Jim Carrey speaks to the media at the premiere of 'Jim & Andy: The Great Beyond' during the 2017 Toronto International Film Festival at Winter Garden Theatre on September 11, 2017 in Toronto, Canada. (Photo by J. Countess/WireImage) NEW YORK, NY - SEPTEMBER 08: Jim Carrey attends 2017 Harper's Bazaar Icons at The Plaza Hotel on September 8, 2017 in New York City. (Photo by Michael Stewart/Getty Images) NEW YORK, NY - SEPTEMBER 08: Jim Carrey and David Copperfield attend the 2017 Harper ICONS party at The Plaza Hotel on September 8, 2017 in New York City. (Photo by Taylor Hill/FilmMagic) NEW YORK, NY - SEPTEMBER 07: (EXCLUSIVE COVERAGE) Michael Moore and Jim Carrey perform as Carrey guest stars and makes his broadway debut in 'Michael Moore's play 'The Terms of My Surrender' on Broadway at The Belasco Theatre on September 7, 2017 in New York City. (Photo by Bruce Glikas/Bruce Glikas/FilmMagic) NEW YORK, NY - SEPTEMBER 07: (EXCLUSIVE COVERAGE) Jim Carrey guest stars and makes his broadway debut in 'Michael Moore's play 'The Terms of My Surrender' on Broadway at The Belasco Theatre on September 7, 2017 in New York City. (Photo by Bruce Glikas/Bruce Glikas/FilmMagic) Venice, ITALY - September 5: Actor Jim Carrey attends the red carpet of 'Jim & Andy: The Great Beyond. The Story of Jim Carrey, Andy Kaufman and Tony Clifton' during 74th Venice International Film Festival at Palazzo del Casino in Lido of Venice, Italy on September 5, 2017. (Photo by primo barol/Anadolu Agency/Getty Images) VENICE, ITALY - SEPTEMBER 05: Jim Carrey walks the red carpet ahead of the Jim & Andy: The Great Beyond - The Story of Jim Carrey & Andy Kaufman Featuring a Very Special, Contractually Obligated Mention of Tony Clifton' screening during the 74th Venice Film Festival at Sala Grande on September 5, 2017 in Venice, Italy. (Photo by Stefania D'Alessandro/WireImage) VENICE, ITALY - SEPTEMBER 05: Jim Carrey attends the 'Jim & Andy: The Great Beyond - The Story Of Jim Carrey & Andy Kaufman With A Very Special, Contractually Obligated Mention Of Tony Clifton' photocall during the 74th Venice Film Festival on September 5, 2017 in Venice, Italy. PHOTOGRAPH BY P. Lehman / Barcroft Images (Photo credit should read P. Lehman / Barcroft Images / Barcroft Media via Getty Images) LOS ANGELES, CA - MAY 31: Producer Jim Carrey attends the premiere of 'I'm Dying Up Here' at DGA Theater on May 31, 2017 in Los Angeles, California. (Photo by Jason LaVeris/FilmMagic) LOS ANGELES, CA - MAY 31: Producer Jim Carrey attends the premiere of 'I'm Dying Up Here' at DGA Theater on May 31, 2017 in Los Angeles, California. (Photo by Jason LaVeris/FilmMagic) LOS ANGELES - MAY 23: Jim Carrey chats in the green room with James Corden during 'The Late Late Show with James Corden,' Tuesday, May 23, 2017 (12:35 PM-1:37 AM ET/PT) On The CBS Television Network. (Photo by Terence Patrick/CBS via Getty Images) JIMMY KIMMEL LIVE - 'Jimmy Kimmel Live' airs every weeknight at 11:35 p.m. EST and features a diverse lineup of guests that includes celebrities, athletes, musical acts, comedians and human-interest subjects, along with comedy bits and a house band. The guests for Monday, May 22 included Jim Carrey ('I'm Dying Up Here'), Rachel Lindsay ('The Bachelorette') and musical guest Bush. (Randy Holmes via Getty Images) JIMMY KIMMEL, JIM CARREY JIMMY KIMMEL LIVE - 'Jimmy Kimmel Live' airs every weeknight at 11:35 p.m. EST and features a diverse lineup of guests that includes celebrities, athletes, musical acts, comedians and human-interest subjects, along with comedy bits and a house band. The guests for Monday, May 22 included Jim Carrey ('I'm Dying Up Here'), Rachel Lindsay ('The Bachelorette') and musical guest Bush. (Randy Holmes via Getty Images) JIM CARREY BEVERLY HILLS, CA - MAY 17: Mel Brooks and Jim Carrey at the LA Premiere of 'If You're Not In The Obit, Eat Breakfast' from HBO Documentaries on May 17, 2017 in Beverly Hills, California. (Photo by Jeff Kravitz/FilmMagic) LOS ANGELES, CA - MAY 22: Jim Carrey is seen at 'Jimmy Kimmel Live' on May 22, 2017 in Los Angeles, California. (Photo by RB/Bauer-Griffin/GC Images) PASADENA, CA - JANUARY 09: Executive producer Jim Carrey of the television show 'i'm Dying up here' speaks onstage during the Showtime portion of the 2017 Winter Television Critics Association Press Tour at the Langham Hotel on January 9, 2017 in Pasadena, California. (Photo by Frederick M. Brown/Getty Images) LOS ANGELES, CA - AUGUST 08: Jim Carrey is seen at LAX on August 08, 2016 in Los Angeles, California. (Photo by starzfly/Bauer-Griffin/GC Images) NEW YORK, NY - APRIL 30: Jim Carrey, Gilbert Gottfried, Jim Gaffigan and Vanessa Bayer attend An Amazing Night Of Comedy: A David Lynch Foundation Benefit For Veterans With PTSD on April 30, 2016 in New York City. (Photo by Craig Barritt/Getty Images for David Lynch Foundation) WEST HOLLYWOOD, CA - SEPTEMBER 17: (L-R) Jim Carrey, Ari Graynor and Michael Angarano attend the Showtime Emmy Eve Party at Sunset Tower on September 17, 2016 in West Hollywood, California. (Photo by Tibrina Hobson/Getty Images) NEW YORK, NEW YORK - APRIL 08: Jeff Ross, Jerry Lewis, Richard Belzer and Jim Carrey attend 90th Birthday Of Jerry Lewis at The Friars Club on April 8, 2016 in New York City. (Photo by John Lamparski/WireImage) BEVERLY HILLS, CA - JANUARY 10: In this handout photo provided by NBCUniversal, Presenter Jim Carrey speaks onstage during the 73rd Annual Golden Globe Awards at The Beverly Hilton Hotel on January 10, 2016 in Beverly Hills, California. (Photo by Paul Drinkwater/NBCUniversal via Getty Images) GOOD MORNING AMERICA - Jim Carrey is a guest on "Good Morning America," on Tuesday, February 4, 2020, airing on ABC. (Photo by Paula Lobo/ABC via Getty Images) JIM CARREY LONDON, ENGLAND - JANUARY 30: Jim Carrey attends the "Sonic The Hedgehog" Gala Screening at Vue Westfield on January 30, 2020 in London, England. (Photo by Lia Toby/WireImage) BEVERLY HILLS, CA - AUGUST 02: Jim Carrey of "Kidding" speaks during the Showtime segment of the 2019 Summer TCA Press Tour at The Beverly Hilton Hotel on August 2, 2019 in Beverly Hills, California. (Photo by Amy Sussman/Getty Images) BEVERLY HILLS, CA - JANUARY 06: Jim Carrey, Ginger Gonzaga arrives at the 76th Annual Golden Globe Awardsat The Beverly Hilton Hotel on January 6, 2019 in Beverly Hills, California. (Photo by Steve Granitz/WireImage) HOLLYWOOD, CA - NOVEMBER 18: Jim Carrey speaks onstage during 'Jim Carrey In Conversation with Jerry Saltz' during Vulture Festival Presented By AT&T at Hollywood Roosevelt Hotel on November 18, 2018 in Hollywood, California. (Photo by Joe Scarnici/Getty Images for New York Magazine) BEVERLY HILLS, CA - OCTOBER 26: Jim Carrey attends the 2018 British Academy Britannia Awards presented byJaguar Land Rover and American Airlines at The Beverly Hilton Hotel on October 26, 2018 in Beverly Hills, California. (Photo by Kevin Winter/BAFTA LA/Getty Images for BAFTA LA) Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

The Golden Globe winner went on relate a dream he claimed he had recently. "I had a dream the other night I was playing golf with Donald Trump," he recalled. "I was standing beside him with a club in my hand, and I was considering my options when I suddenly woke up."

"It was one of those dreams where you just want to get back to sleep so you can finish it, you know?" Carrey added.

WATCH: CNN Fires Kathy Griffin as New Year's Eve Co-Host After Controversial Donald Trump Photo

Griffin faced immediate backlash for her role in the photo shoot and issued a lengthy apology video hours after the pictures were released, where she admitted that she felt she'd "crossed the line."

"I sincerely apologize," Griffin said. "I'm just now seeing the reaction to these images. I'm a comic. I crossed the line. I moved the line, then I crossed it. I went way too far."

The blowback was immediate, and the 56-year-old comedian was subsequently let go by CNN, where she routinely hosted their New Year's Eve special, alongside Anderson Cooper, for the last 10 years.

See more photos of Jim Carrey:



22 PHOTOS Jim Carrey See Gallery Jim Carrey SATURDAY NIGHT LIVE -- 'Jim Carrey' Episode 1666 -- Pictured: (l-r) Jim Carrey and Iggy Azalea on October 23, 2014 -- (Photo by: Dana Edelson/NBC/NBCU Photo Bank via Getty Images) SATURDAY NIGHT LIVE -- 'Jim Carrey' Episode 1666 -- Pictured: (l-r) Jim Carrey and Aidy Bryant on October 21, 2014 -- (Photo by: Dana Edelson/NBC/NBCU Photo Bank via Getty Images) WESTWOOD, CA - OCTOBER 11: Jim Carrey arrives at the Hammer Museum's 'Gala In The Garden' Honoring Joni Mitchell And Mark Bradford at Hammer Museum on October 11, 2014 in Westwood, California. (Photo by Steve Granitz/WireImage) WEST HOLLYWOOD, CA - OCTOBER 06: (L-R) Director Peter Bogdanovich and Actor Jim Carrey attend 'As You Wish' Book Launch at Pearl's on October 6, 2014 in West Hollywood, California. (Photo by Ari Perilstein/Getty Images for El Cuarton Films) WEST HOLLYWOOD, CA - OCTOBER 06: (L-R) Actress Selma Blair and Actor Jim Carrey attend 'As You Wish' Book Launch at Pearl's on October 6, 2014 in West Hollywood, California. (Photo by Ari Perilstein/Getty Images for El Cuarton Films) INGLEWOOD, CA - AUGUST 24: Jennifer Lopez and Jim Carrey attend the 2014 MTV Video Music Awards at The Forum on August 24, 2014 in Inglewood, California. (Photo by MTV/MTV1415/Getty Images for MTV) INGLEWOOD, CA - AUGUST 24: Actors Jim Carrey and Jeff Daniels perform onstage at the 2014 MTV Video Music Awards at The Forum on August 24, 2014 in Inglewood, California. (Photo by Jason LaVeris/FilmMagic) INGLEWOOD, CA - AUGUST 24: Jeff Daniels and Jim Carrey attend the 2014 MTV Video Music Awards at The Forum on August 24, 2014 in Inglewood, California. (Photo by MTV/MTV1415/Getty Images for MTV) THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0072 -- Pictured: (l-r) Host Jimmy Fallon, actor Jeff Daniels and actor Jim Carrey during the 'Fake Arms: Burger Joint' skit on June 10, 2014 -- (Photo by: Douglas Gorenstein/NBC/NBCU Photo Bank via Getty Images) NEW YORK, NY - APRIL 27: Jim Carrey, guest and Susan Sarandon attend the Philadelphia Flyers vs New York Rangers playoff game at Madison Square Garden on April 27, 2014 in New York City. (Photo by James Devaney/GC Images) THE OSCARS® - THEATRE - The Academy Awards® for outstanding film achievements of 2013 will be presented on Oscar Sunday, MARCH 2 (8:30 p.m. - 12:00 a.m., ET/5:30-9:00 p.m., PT), at the Dolby Theatre® at Hollywood & Highland Center® and televised live on the ABC Television Network. (Photo by Adam Taylor/ABC via Getty Images) HOLLYWOOD, CA - MARCH 02: Actor Jim Carrey speaks onstage during the Oscars at the Dolby Theatre on March 2, 2014 in Hollywood, California. (Photo by Kevin Winter/Getty Images) BEVERLY HILLS, CA - FEBRUARY 27: Actor Jim Carrey arrives at the David Lynch Foundation Gala Honoring Rick Rubin at the Beverly Wilshire Hotel on February 27, 2014 in Beverly Hills, California. (Photo by Kevin Winter/Getty Images) WEST HOLLYWOOD, CA - JANUARY 23: Recording Artist Steven Tyler and Actor Jim Carrey arrive at 1 OAK LA Grand Opening With Special Performance By Steven Tyler at 1 OAK on January 23, 2014 in West Hollywood, California. (Photo by Michael Bezjian/WireImage) BEVERLY HILLS, CA - JANUARY 12: 71st ANNUAL GOLDEN GLOBE AWARDS -- Pictured: Actor Jim Carrey poses in the press room at the 71st Annual Golden Globe Awards held at the Beverly Hilton Hotel on January 12, 2014 -- (Photo by Kevork Djansezian/NBC/NBC via Getty Images) LOS ANGELES, CA - OCTOBER 26: Actor Jim Carrey signs copies of his new children's book 'How Roland Rolls' at Barnes & Noble bookstore at The Grove on October 26, 2013 in Los Angeles, California. (Photo by Jason LaVeris/FilmMagic) TORONTO, ON - OCTOBER 06: Jim Carrey attends his book signing for 'How Roland Rolls'at Indigo Yorkdale on October 6, 2013 in Toronto, Canada. (Photo by Isaiah Trickey/FilmMagic) TORONTO, ON - OCTOBER 06: Jim Carrey hosts a signing for his children's book 'How Roland Rolls' at Indigo at Yorkdale Mall on October 6, 2013 in Toronto, Canada. (Photo by Jag Gundu/Getty Images) NEW YORK, NY - OCTOBER 05: Actor Jim Carrey promotes the new book 'How Roland Rolls' at Barnes & Noble Union Square on October 5, 2013 in New York City. (Photo by Gilbert Carrasquillo/FilmMagic) ATLANTA, GA - SEPTEMBER 29: Actor Jim Carrey looks on prior to the start of the game between the Atlanta Falcons and the New England Patriots at Georgia Dome on September 29, 2013 in Atlanta, Georgia. (Photo by Kevin C. Cox/Getty Images) HOLLYWOOD, CA- APRIL 27: Actor Jim Carrey attends actress Jane Fonda's Handprint/Footprint Ceremony during the 2013 TCM Classic Film Festival at TCL Chinese Theatre on April 27, 2013 in Los Angeles, California. (Photo by Jeffrey Mayer/WireImage) HOLLYWOOD, CA - MARCH 11: Jim Carrey arrives at the 'The Incredible Burt Wonderstone' - Los Angeles Premiere at TCL Chinese Theatre on March 11, 2013 in Hollywood, California. (Photo by Steve Granitz/WireImage) Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

Cooper also issued a stern rebuke of the comedian on Twitter, writing,"For the record, I am appalled by the photo shoot Kathy Griffin took part in. It is clearly disgusting and completely inappropriate."

NEWS: Anderson Cooper 'Appalled' by Kathy Griffin's 'Disgusting' Donald Trump Photo, Melania Trump Also Responds

For more on Griffin's controversial photo shoot and the subsequent fallout she's faced, watch the video below.

I'm Dying Up Here, which Carrey executive produced, premieres June 4 at 10 p.m. ET/PT on Showtime.