While appearing on the popular online talk show 'Hot Ones' to promote the new Tenacious D album, rock superstars Jack Black and Kyle Gass told host Shawn Evans about their most "disastrous" live concert.

The "fiasco" in question was their Miller Genuine Draft performance early in their career. The concert was part of a 'Blind Date' contest in which the beer producer flew the winners out to Las Vegas to see a yet-to-be revealed band play.

"Everyone’s just, like, it’s probably going to be U2, it’s probably going to be Led Zeppelin," remembers Black. "Then, the curtain opens and it’s all these drunk people from all over the country who’ve been flown to Vegas, and then it’s Tenacious D."

Gass added that "it was 1998, and nobody knew who we were!"

The crowd immediately began to boo and toss things at the stage. Things got so bad that one of their backup performers dressed as Spider-Man refused to go on stage.

Reconsidering, Black said, "in a weird way, it might have been our best show."

Watch the pair tell this and other stories in the full episode below.