However, Black's entrance ended with his pants falling off his waist as he skipped ... As he moved across the stage to take a seat, he did a dance for the audience who broke into cheers.

Black arrived fully clothed in a colorful button-down and black pants ... With his pants back where they belonged, Black busted one more triumphant dance move for the Tonight Show audience ...

Jack Black's Pants Fall Down in Hilarious 'Tonight Show' Mishap: 'I Didn't Bring a Belt!' ‘For Better Or Worse’: Trump Wins Crucial Supreme Court Ruling Footage of colossal squid captured on ...

As he ran down through the crowd and onto the stage, he wound up skipping over to Fallon himself. But, as Black made it to the host for a hug, the actor’s pants quite literally dropped of their ...

But, when he walked up to the comedian, his pants fell down, drawing laughter from the audience. FILE PHOTO: Cast member Jack Black attends the world premiere of ''A Minecraft Movie'', in London ...

However, Black's entrance ended with his pants falling off his waist as he skipped up the steps ... As he moved across the stage to take a seat, he did a dance for the audience who broke into cheers. ...

Jack Black makes a March 31 appearance on 'The Tonight Show Starring Jimmy Fallon' ...