Brendon Urie is taking some moves from the Marky Mark playbook -- and dropping his pants on stage!

The Panic! At the Disco singer, 24, kicked off a Twitter firestorm this morning when video of him from last night's Summerfest concert in Milwaukee popped up online, video showing him doing a strip tease during one of the band's songs.

The crowd of young ladies definitely enjoyed the show, with Urie tweeting after "Thanks for an unforgettable end to a tour, Milwaukee. Haven't felt that naked on stage in quite a while. Thanks for bringing that out of me."

This isn't the first time Urie's stage antics have made headlines -- this past May, the singer finished a concert after breaking his ankle during a live show.

ncG1vNJzZmisn6Szoq6NnKamZ2JlfnJ7j3BmaWlfpa6vtcJmmK1lpJ2ybrDIrJqoZaOeu6ix0WaZq52embyvedSroJ5lo6m%2FqrzPoqWgZaOquq6x0Z%2BcrKxdmLyvr8Srq2aumZmysHs%3D