Auto erotic genital manipulation performed without the aid of one's hands. The flaccid penis is thrust about with aggressive hip movements and shuffling for between one and two hours or until erection occurs. The flopping off continues for another three to twelve hours when climax is finally achieved. Women with large clitori or labia minora may also engage in flopping off.
Guy 1: Man, I was flopping off like crazy yesterday. Took me like 13 hours but it was sweet, yo!
Guy 2: An all day floppoffathon? Gross!
Guy 2: An all day floppoffathon? Gross!
by Fatty Blumpkin March 17, 2015
by Bigdave1983 May 23, 2008
A game used to determine anything the involves, The flipping of pancakes consecutively as many times as you can, the first person to let it flop on the ground loses. The pancakes are then compared and bonus points are give for depending on the size of the pancake. (larger = more points)
1. Dammit He beat me in the Flop off he must be better than me
2. The flop off was over shortly his pancake was much to small to count
3. He's going to win the flop off look at the size of his pancake
2. The flop off was over shortly his pancake was much to small to count
3. He's going to win the flop off look at the size of his pancake
by 1HappyCamp-R March 10, 2013