The star of “A Minecraft Movie” made an appearance on “The Tonight Show Starring Jimmy Fallon” Monday night, where he played an energetic guitar solo to the crowd and lost his pants in the process, revealing his red and black boxers. Black pulled his pants back up and Fallon told the actor he was bringing “the heat” to the set.

Jack Black experienced a slight wardrobe malfunction during his Monday appearance on “The Tonight Show Starring Jimmy Fallon.” The actor, 55, came out while playing on an electric guitar, but as he danced up the steps his pants fell around his ankles, showing off his black and red boxers.

Actor and comedian Jack Black suffered a wardrobe malfunction during his appearance on The Tonight Show Starring Jimmy Fallon on Monday, March 31, 2025.