Jack Black gave The Tonight Show audience much more than they bargained for on Monday (March 31) evening as he flaunted his multi-colored underwear while greeting host Jimmy Fallon.

Black arrived fully clothed in a colorful button-down and black pants as he shredded a Minecraft guitar while walking through the audience and to the Tonight Show stage to promote A Minecraft Movie, his latest project. Unfortunately, he rocked a little too hard and his pants began to slide off his waist as he hopped and jumped toward Fallon.

While skipping up the steps to say hello to the host, Black suffered a wardrobe malfunction (and classic nightmare) right before our eyes as his pants fell to his knees, revealing a colorful pair of boxers.

Of course, this being Jack Black, he rolled right along with it, shaking his hips to live music from the Tonight Show band and leaning in to give Fallon a big hug, still pants-less.

“You know how to bring it,” Fallon could be heard telling his guest, who finally fixed his look after pulling away from their hug. With his pants back where they belonged, Black busted one more triumphant dance move for the Tonight Show audience, who was eating it up.

“That is Jack Black! That’s how you make an entrance,” Fallon declared, praising his guest for bringing “the heat” and “the energy.”

Unfortunately, there was one key thing Black did not bring with him to The Tonight Show. He retorted, “I didn’t bring a belt!”

Fallon laughed and told his guest, “I’m sorry about that,” the promised to fix the mishap in post-production. Unfortunately for Black, it’s right up there on YouTube for all of us to see.

The good news is, we really can’t think of anyone else who could make losing your pants on live TV look any cooler.

The Tonight Show Starring Jimmy Fallon airs weeknights at 11:35/10:35c on NBC. Scroll up to watch Black’s unforgettable entrance in the video above.