Jimmy Kimmel isn't fake friends with Jay Leno anymore.

"Fuck him," Kimmel said when asked about Leno at a panel Monday, Xfinity [5] reports.

Kimmel will face off with both David Letterman and Jay Leno when "Jimmy Kimmel Live" moves to 11:35 p.m. in January. At a 92nd Street Y talk with New York Times writer and late night authority Bill Carter, Kimmel praised Letterman, prompting Carter to ask about Leno.

Kimmel delivered his two-word reply, before saying a “friendship” he once had with Leno was “fake.”

Also read: Kimmel to Face Off With Leno, Letterman [6]

Kimmel and Carter then discussed Kimmel's impersonation of Leno during the 2010 dispute over the "Tonight Show" that led to Leno reclaiming the show from Conan O'Brien.

“I impersonated him on my show,” Kimmel recalled, “and it was the most fun I’ve ever had on my show.”

Leno invited Kimmel on his show the next night, which proved to be a mistake: He asked seemingly inoccuous questions that Kimmel gleefully twisted into insults.

“What was the best prank you ever pulled?” Leno asked, to which Kimmel replied, “I think the best prank I ever pulled was I told a guy that five years from now I’m going to give you my show, and then when the five years came, I gave it to him and then I took it back almost instantly!”

Also read: Leno Knocks Comcast, NBC Over 'Tonight Show' Layoffs [7]

“It was probably my proudest moment,” Kimmel told Carter, author of "The Late Shift" and "The War for Late Night."

“People, it turns out, really don’t like Jay Leno,” Kimmel addd. “We have not spoken since that time."

Leno hasn't made any mention of Kimmel's move to 11:35, which perhaps shouldn't be a surprise.