batooski Share definition Flag a slang word for someone's butt. Very inoffensive, similar to tookus. "How was the soccer match the other day?" "Dude, we totally kicked their batooskis." batooski by pepeamongtfwnogfs February 29, 2016 0 0 Get merch Get the batooski mug. Buy Now — $32.95 See more merch