It all starts out so tranquil and well-intentioned.

You're used to seeing them riding around with your SEC filings and PAC checks in their bags. But couriers ride for fun, too.

And they party like it's their job. Sunday's Perverts Invitational open street race was a prelude to late night debauchery at Chief Ike's that was gratuitous even for Adams Morgan.

Check out the fun photographs -- including pics of sweaty, shirtless men -- after the jump.

When the racing ends, the mayhem starts.

Excuse me, have we met somewhere before?

Yes, he's doing what you think he's doing.

A very accurate metaphor, told with base perversion.

For diddling around all day and coming in Dead Fucking Last, the prize is, well, apt.

I want food and pussy. How come? It's just the way God made me.

(Much thanks to Intern Nick for the cool pics.)