Justin Timberlake made a surprise appearance on NBC's Tonight Show Tuesday, joining Jimmy Fallon in a sketch about two nerdy campers in 1997. The bit started with Fallon inviting his curly-haired BFF to play a game of truth or dare. "Is it weird that it's just two boys?" Timberlake asked before picking truth. "Truth or dare: do you have a crush on anyone?" Fallon asked. "Yeah," the sheepish singer confessed.
"Kimmy Gibbler from Full House!" Timberlake said, earning him an air-five.