Tuesday night (Aug. 8), besties Jimmy Fallon and Justin Timberlake pulled out the flashlights and sang like nobody was still awake on The Tonight Show.

The excitable tweens (who have been doing this sketch for years) were joined by two very special guests: agitated, short-shorts-wearing counselor Keegan-Michael Key and bearded 12-year-old camper Billy Crystal in the 10-minute segment.

Amped up after eating about 7 Charleston Chews, Timberlake got things going by lying about wanting to be in Color Me Badd during a game of Two Truths and a Lie before the pals loudly bonded over their love of 4 Non Blondes’ signature hit “What’s Up.”

Billy (Crystal) from Camp Buttonwood showed up later to bring some noise with Gloria Estefan‘s “Rhythm is Gonna Get You.”

Check out the whole clip below.

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