Park Bench Ass Share definition Flag A large, flat ass on a woman. As if she flattened it through excessive time spent sitting on a park bench. Rachael Ray is kinda hot, but she's got serious park bench ass. Park Bench Ass by James in Raleigh June 9, 2009 0 0 Get merch Get the Park Bench Ass mug. Buy Now — $32.95 See more merch