There's already an element of naughtiness in the thought of club-going on a weeknight. Magnify that element tenfold at the Heretic's Wednesday and Sunday night dress-code parties, when everyone on the dance floor is required to be either shirtless or in leather, no exceptions, so don't even argue. Most of the sweaty masses opt for skin, leading to a writhing tangle of men mostly looking for trouble. The crowd varies from gruff and goateed to recent ex-frat boys, but the house-heavy mix from DJ Scotty almost always sets the mood for finding Mr. Right Now. Avoid the back hallway and get out before the lights come up. You just might see someone you know.