Meghan McCain, the daughter of Sen. John McCain (R-Ariz.), appeared on NBC's "Tonight Show With Jay Leno" on Tuesday to talk about the release of her new book, "America You Sexy Bitch."

McCain wasted no time announcing that the "research" she had done for the book, which included smoking a joint, had led her to support legalizing marijuana.

"That seems really Republican,” Leno ribbed, prompting McCain to delve into the subject.

“Yes, I come out for legalizing marijuana in this book,” she announced. “I was living in Los Angeles very briefly last year and I was shocked at how people here smoke weed the way people in New York pour wine.”

McCain went on to mention the "parallels" between between marijuana and alcohol prohibition and said her "research onto the economic benefits" of legalizing the substance had led her to "come out publicly in support of it."

A recent study found that doing so could save the U.S. around $13.7 billion annually.

Asked by Leno if she smoked weed herself, McCain admitted to lighting up in New Orleans, where she said she was going to tour Treme for a segment in her book.

While she claimed that the behavior wasn't typical for her, it did earn her friend Glen -- the apparent provider -- a "big shout out."

McCain added more context to her beliefs on marijuana laws later in the interview when Leno asked for her thoughts on an effort by New York City Mayor Michael Bloomberg's move to ban soft drinks larger than 32 ounces.

“My favorite thing about this is Governor Cuomo is trying to pass a bill in New York that says if you’re caught with certain ounces of marijuana that it’s okay unless it’s over a certain amount -- I think it’s 32 grams. So technically, I could be caught with a joint in New York and be fined $100, but if I’m caught with a a Slurpee, it’s $200,” McCain said.

"America You Sexy Bitch" is co-written with actor-comedian Michael Ian Black and hit bookshelves earlier this week.