Celebrity·Posted on Dec 21, 2012Jerry Seinfeld And Billy Crystal Perform The Sequel To Abbot & Costello's "Who's On First"Along with Jimmy Fallon, A.D. Miles, and Higgins on last night's episode of Late Night.by Whitney JeffersonBuzzFeed StaffLinkFacebookPinterestTwitterMail View this video on YouTube Tap to play GIF Tap to play GIF