Coachwhips' Get Yer Body Next ta Mine (Narnack) is a pretty predictable slab of front-porch boogie, just a bunch of churning, repetitive songs about booze, brawls, and broads. In fact, the San Francisco trio might be indistinguishable from the rest of the faded-black-jeans-and-sunglasses crowd if not for the weirdness that is John Dwyer. He was the hyper, violent Pink in noisy pranksters Pink and Brown and is currently pissing off the rainbow flag community as German pervert Hans Bunschlapen in Ziegenbock Kopf, an exaggeratedly homoerotic leather-daddy techno group. He's a little more restrained here, but it's the restraint of an active volcano saving up for a big blast. Sure, his guitar scribblings are in perfect time with the beat, but every once in a while he flies off the handle so fast and hard he can't even sing, and his nasty lyrics turn into unintelligible gurgles and screeches. Though Dwyer has the biggest personality in the group, the best thing musically about them is drummer John Harlow. He's nothing spectacular, he just knows how to plug the holes that develop when a band substitutes splashes of organ and tambourine for a steady bass. Live, Coachwhips have a stained-armpit energy that promotes violent camaraderie and makes a crowd want to get sloppy. Tuesday, May 27, 8 PM, Fireside Bowl, 2646 W. Fullerton; 773-486-2700.