As he was announced by Jimmy Fallon, the actor, 55, rocked down the aisle with a Minecraft-inspired red electric guitar ... his way up to Fallon as his black pants slid to his knees.

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 ...

Police said the suspect accused of stashing the guitar was described as a white male in his 20s, wearing “extremely large, baggy pants,” a black coat and a Toronto Maple Leafs baseball hat.

He then picked up another guitar and started strumming it ... in his 20s or 30s wearing “extremely large, baggy pants,” as well as a black coat and a Toronto Maple Leafs baseball hat.

"Man steals guitar. Stuffs guitar into pants ... the culprit appears to slide the instrument into his black athletic pants and situate his clothing before walking away. Reporter, mySA.com ...

It's been a while since leather pants were reserved for guitar-slinging rockstars ... for graphic impact pairing leather leggings with a black and white print blazer, and a Thakoon bag in tow.

Prior to losing his pants, Black rocked down the aisle and onto the stage to “play” his Minecraft guitar with the “Tonight Show” band. Todd Owyoung/NBC via Getty Images The pair discussed ...

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. The “School of Rock” alum ...