Camp Winnipesaukee with Justin Timberlake, Keegan-Michael Key and Billy Crystal

Jimmy Fallon and Justin Timberlake are kids at Camp Winnipesaukee, singing “What’s Up“ by 4 Non Blondes and Gloria Estefan’s “Rhythm Is Gonna Get You“ with cameos from Billy Crystal and Keegan-Michael Key. Subscribe NOW to The Tonight Show Starring Jimmy Fallon: Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35/10:35c Get more Jimmy Fallon: Follow Jimmy: Like Jimmy: Get more The Tonight Show Starring Jimmy Fallon: Follow The Tonight Show: Like The Tonight Show: The Tonight Show Tumblr: Get more NBC: NBC YouTube: Like NBC: Follow NBC: NBC Tumblr: The Tonight Show Starring Jimmy Fallon features hilarious highlights from the show