Jack Black does the best Tonight Show joke ever as his renowned Sax-A-Boom.

Jack Black’s appearance on *The Tonight Show Starring Jimmy Fallon,* where he brought out his iconic Sax-A-Boom, remains one of the show’s most unforgettable moments. Famous for incorporating the children’s toy into his live acts, Black jokingly claimed that mastering the Sax-A-Boom requires years of dedicated practice.

When Fallon surprised him with a Sax-A-Boom on set, Black handled it as if it were a rare Stradivarius violin, teasing the audience with a promise to showcase his “expertise.” What followed was a comedic tour de force as Black enthusiastically played the toy saxophone, which produced pre-recorded tunes at the touch of a button. His over-the-top expressions and dance moves elevated the performance, delighting the audience and earning roaring applause.

The fun didn’t stop there. Black made his way over to The Roots, the house band, where Questlove kicked off a funky rhythm. Black and Fallon joined in with some spirited dance moves, transforming the segment into one of the most memorable moments on *The Tonight Show.* This performance quickly went viral, racking up 95 million views on YouTube and earning its place as the seventh most popular video on the show’s channel.

Check out the video below to witness Jack Black’s iconic Sax-A-Boom performance on *The Tonight Show Starring Jimmy Fallon.*