patty flattie Share definition Flag A women who's breasts and ass are very flat. Fuckboy 1: DUDE THAT GIRL WAS SO PRETTY Fuckboy 2 : Nah man, she was a patty flattie. patty flattie by lucifer_666 July 16, 2015 0 0 Get merch Get the patty flattie mug. Buy Now — $32.95 See more merch