Here’s your last chance to catch Chelsea Boys before they and their super sexy synth-tastic sound head out on tour through the upper midwest to the east coast. The band, if you couldn’t tell from the name, mixes just the right combination of heteroflexible innuendo with danceable drum beats. MC Spyder Baybie Raw Dog and 2% Muck will warm up the crowd with their freaky and funky beats. Tickle Torture and Grave Danger (Preston from Buffalo Moon) also open. Follow the stream of kids in wayfarers and tank-tops behind the old Bedlam space to XXXUSA/Club Med on the West Bank. $5 at the door, space opens at 10 p.m.