Meet Loincloth Guy.

But first, let me backtrack:

A Japanese man in sunglasses spends a good half-hour spastically dancing alone in front of the DJ. No big deal.

A spastic Japanese man in sunglasses makes it readily apparent through his dancing that he had a couple handfuls of various drugs before showing up at the bar. No big deal, he's not bothering anyone.

A spastic, drugged-out Japanese man in sunglasses takes off his sunglasses, lies down on the nearby couch, and begins thrusting his pelvis into the air to a techno beat. No big deal, we all have our forms of self-expression.

A spastic, drugged-out, pelvic-thrusting Japanese man gets up from the couch and raises his arms in victory.
Double take! What's that peeking out from his jeans?! A piece of cloth in front, a piece of cloth in back, and some string. Well, no big deal, just your average, run-of-the-mill sexual deviant.

A spastic, drugged-out, pelvic-thrusting, sexually deviant Japanese man marches up to the dance floor, rips off all his clothes down to his bright red loincloth, and jumps up and down until George the Bartender stuffs his clothes into his arms and ushers him away.

He does this three times.

Meet Loincloth Guy.