Boston T-Bag Share definition Flag Where a girl lays flat and she sucks ur balls while another girl sucks ur dick... Its Fuckin awesome!!! I jizzed in their mouths while they gave me a boston T-bag! Boston T-Bag by Kyle Lucas <> December 6, 2010 0 0 Get merch Get the Boston T-Bag mug. Buy Now — $32.95 See more merch