WATCH: Michael Phelps Strips Down to Speedo in Hilarious Courtside Stunt

Distracting might be an understatement!

Michael Phelps showed up for Arizona State University’s basketball game against Oregon State last night and gave ASU a serious advantage!

The 18-time Olympic gold medal winner appeared at the ASU student section’s “Curtain of Distraction” at the end of the game to derail Oregon.

During free throws, the hunky swimmer appeared from behind a curtain two times. The first time, he tore off his shirt and cheered with a couple of students while wearing a bowtie and slew of fake gold medals. The second time, his pants came off!

Needless to say, Oregon lost. Watch the video!