Jonah Hill's Embarrassing Moment with P. Diddy & Co. (VIDEO)

Jonah Hill usually has great comedic timing. Usually. But, as he explained to Jon Stewart on 'The Daily Show' (weeknights, 11PM ET on COM), cracking a horrible joke in an elevator became one of the most embarrassing moments of his life.

Hill and his friends found themselves in the same elevator as Sean "P. Diddy" Combs, Jermaine Dupri and their friends. "Twenty people crammed into a tiny elevator," said Hill. "I'm gonna make a joke to break the ice."

What did Hill say that caused "a deafening silence"? Check out the video clip. "I've been in some uncomfortable moments -- as you can probably tell -- in my life. This by far and away trumps them all," said Hill.