04/13/2012 12:42 pm ET Updated May 23, 2012

Billy Crystal Looks Back On Redd Foxx (VIDEO)

On the 'Late Show' on Thursday, Billy Crystal reveals to David Letterman an experience he had with "the original dirty comedian" Redd Foxx in 1979. According to Crystal, who also does his best Foxx impression, the legendary comedian invited him to be a guest to attend his 2:30 a.m. stand-up show in Vegas. But when Crystal showed up, he didn't get the performance he was expecting.

Be sure to watch the above video for Crystal's funny story about his brush with Foxx and what that trip to the theater ended up costing him.