"I'm imagining an eight-way with the kids from Silverchair and Hanson," mused raccoon-eyed L7 singer Donita Sparks from the stage of Boston's Paradise Rock Club. "But I guess sodomy with a 12-year-old is illegal in this state -- unless you're a Kennedy."

\\Bah-da-boom.

\\Such is the wit and wisdom of L7, who certainly accomplished what they set out to do during their hour-long show Tuesday night: "Rock yer f---in' balls off, rock yer f---in' p---ieeeeesssss!!!!" Buoyed by new bassist Gail Greenwood -- who at one point asked if the crowd had "figured out which one of the girls has the nicest weiner" (a question she probably never asked when in Belly) -- music's reigning trashrock divas did more than crack dirty jokes. They poured grunge, garage-punk, and good old-fashioned metal into a blender and hit puree, achieving a result somewhat akin to the Shangri-Las closing down a biker bar with the Stooges.

\\But beneath all the smudged eyeliner and bad attitude, L7 also showed how they've managed to hang around for 10 years: they mix and match their rock & roll influences effectively, reveling in willfully sludgy, dum-dum-boy -- er, make that girl -- rawk while delivering snide social commentary on the state of said dum-dum boy mentality.

\\Much of the material the band performed from its latest album, "The Beauty Process: Triple Platinum," offered convincing proof that the band is tuffer and tighter than ever. In fact, the somewhat unfocused thrash-metal stew of L7's early days has all but disappeared in favor of a leaner, though no less brutal assault, booby-trapped with nasty hooks and wrecking-ball riffs. Hopped up on decongestants (both were nursing colds) and sporting dyed-blonde manes worthy of Spinal Tap, Sparks and singer-guitarist Suzi Gardner traded a truckload of licks on favorites like "Pretend We're Dead" and such beautifully corrosive new numbers as "I Need" and the jaunty Chuck Berry update "Off The Wagon."

\\The deafening riffs occasionally strayed into generic metal territory ("Drama