India, April 2 -- Jack Black faced a hilarious wardrobe malfunction during Monday's episode of The Tonight Show. As the 55-year-old was introduced by Jimmy Fallon, he made a rocker-style entry with a Minecraft-inspired red electric guitar. The School of Rock actor stopped by the show's band and pretended to play his instrument enthusiastically. But, when he walked up to the comedian, his pants fell down, drawing laughter from the audience.

Black seemed unbothered by the mishap as he proceeded to hug the talk show host before pulling his pants back up while shimmying his hips. "You bring the heat! You bring the energy!" Fallon told the actor, to which he quipped, "[I] didn't bring a belt. That's what I didn't bring." The Goosebumps star a...