McPussy Share definition Flag 1. A pussy so fat it look like a hamburger.2. A fat unhealthy pussy (yeast) McPussy with Cheese Ol' girl look a lil' chunky in da club, but when i got her to da crib I see she got a McPussy! Man, good thing I love me some hamburgers. McPussy by Dat Gal June 4, 2009 0 0 Get merch Get the McPussy mug. Buy Now — $32.95 See more merch