Ron Reagan crashed the Democratic presidential primary debate Tuesday night with a plug for an atheist group that turned his name into the top trending search on Google — as he declared that he was “not afraid of burning in hell.”

“Hi, I’m Ron Reagan, an unabashed atheist,” the 61-year-old son of the late President Ronald Reagan said in a commercial for the Freedom From Religion Foundation.

“I’m alarmed by the intrusions of religion into our secular government. That’s why I’m asking you to support the Freedom From Religion Foundation, the nation’s largest and most effective association of atheists and agnostics working to keep state and church separate, just like our founding fathers intended.”

In a donation request, the Gipper’s son described himself as a “lifelong atheist, not afraid of burning in hell.”

“‘Ron Reagan’ is the top trending search on Google right now,” the tech giant said on Twitter at 9:11 p.m.

The ad made waves on social media, with some users feeling blindsided, including former “Apprentice” star and former White House staffer Omarosa Manigault Newman.

“Ummm am I the only one that got blindsided by that #ronregan ad just now on CNN? #creepy,” she said in a tweet.

The Wisconsin-based Freedom From Religion Foundation has previously found it difficult to get the TV networks to air the ad, which was shot in 2014, according to The Blaze.

In 2015, the conservative media outlet Newsmax reported that while CNN and Comedy Central were willing to show it, “ABC, NBC, CBS and Fox all have declined to run the ad.”

The FFRF most recently made headlines after it filed a complaint against the judge who gave a Bible to former Dallas cop Amber Guyger after sentencing her for killing a black neighbor.