Mart Bark Share definition Flag a Mart Bark; to go up to a girl (possibly boy, depending on how horny), and pest them for sex. wee wee poo poo, hey everybody look at me im Mart Bark (Woof Woof) Mart Bark by the best mc, 123 abc October 19, 2010 0 0 Get merch Get the Mart Bark mug. Buy Now — $32.95 See more merch