Jimmy Kimmel went on the "Late Show with David Letterman" yesterday and admitted to sucker-punching Jay Leno back in January -- but it was all in good fun.
Kimmel pulled a sneak attack during Leno's Ten at Ten segment at the peak of the Conan-Leno feud on Jay's own show -- and last night he admitted he intended to sabotage The Big Chin.
Despite the barrage of insults, Kimmel says he and Jay are still "very close" -- though he didn't keep a straight face while saying it.