If you don't know what's so NSFW about harmless seeming locals Bukkake Daydream (just look at them playing on the slide) you are STRONGLY discouraged from doing a Google search for that hard to pronounce, vaguely Japanese-sounding word at the front of their name, or you'll forever refer to December 12, 2008 as the day your innocence died.
I haven't personally seen BKKD (as they refer to themselves for the benefit of less sleazy publications) but by all reports, their noisy blend of experimental psychedelia is reassuringly free of bodily fluids. See for yourself tonight at the Mix (2423 N.St. Marys), where they're scheduled to take the stage around 11:15 p.m. Admission is free, Austinite noisemakers Muchos Backflips are also scheduled to perform. Just to be on the safe side, I'd recomend standing as far away from the stage as possible, and maybe sporting one of those trash-bag ponchos people wear to Gallagher shows.