Bum Flute Share definition Flag two meanings, 1.using your vagina to music with. 2.another word to describe your vagina. "her bum flute was ripping some awesome tunes man" Bum Flute by xazzyleahsarahvixcarlingford October 29, 2008 0 0 Get merch Get the Bum Flute mug. Buy Now — $32.95 See more merch