If clothes make the man, a crotchety naked guy just crowned himself underwear king of Philadelphia.

The baffling streaker climbed onto an empty bike rack on the front of a SEPTA bus and put his boxer shorts on his head. Then he dismounted and ran through the streets as a captivated crowd of spectators gathered around.

“I was just cutting hair, all of a sudden I see this white boy just running around acting crazy,” said barber Lou Jeffery, who used his smartphone to record the middle-aged man’s bizarre exploits at the intersection of Kensington Avenue and Tioga Street.

The frazzled nudist scampered around as if he were a character from the opening moments of “The Terminator,” inexplicably emerging nude in an unfamiliar land.

He started chasing Jefferey when he realized his unusual unclothed escapade was being recorded.

Theodore Diehl via YouTube

The unidentified man barely appeared to realize he was exposed as he strolled around the neighborhood.

“Of course I put my camera down and started running myself,” Jeffrey said. “I [AM NOT] going to let him chase after me.”

José Mora also shot footage of the episode from his brother’s restaurant and caught the man’s odd pursuit of Jeffery on camera, reported CBS Philly.

“I don’t think he knew what he was doing actually,” said Mora.

At one point the naked man tried to put his boxers on again to no avail. Some witnesses said that police eventually arrested the man.

The video was originally posted to Facebook and has since been removed, but it is still drawing viewers on YouTube, according to NBC 10.