Butthole SurfersTuesday, Dec. 30, 2008The FillmoreWords by Jennifer Maerz, photos by Scott CarisBetter than: Taking enough acid to visualize an x-ray of a girl passing gas.The hippie geezers may get their acid flashbacks going to see Santana or Jefferson Starship, but for the punk geezers, there's no better place to fry your brain like an egg for old time's sake than a Butthole Surfers show. This was made very clear last night, when the Fillmore was packed with pre-New Year's Eve excitemen