A pair of fat breasts that hang so low that when you fuck the girl who has the hanging tittles that they shake like flipping flapjacks.
Joe: Ms. Ploof has a pair of pancake tits. I fucked her last night for A's all through high school and they made me sick when they shook.
Frank: Oh dear god. You fucked Ms. Ploof our principal and saw her flop em jalopems? Why didn't you kill yourself?
Joe: Because I'm going to be a straight A high school student.