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
 Get the Flopping Offmug.
Get the Flopping Offmug. Term used to describe a situation where a man fails to sustain a pre-existing erection.  Often applied to instances where sex was imminent but did not occur as a result of the flopped straight.
Mike was so horny after making out with his girlfriend for three hours, but when she took her panties off and he finally realized he was about to lose his virginity, he got so nervous that he wound up flopping a straight, much to her dismay.
by Chonky December 9, 2008
 Get the Flopping a straightmug.
Get the Flopping a straightmug. When a man takes his dick and smacks it against a woman’s face while screaming, “Where’s the lamb sauce” in Gordon Ramsey’s voice
by Shrhsuwhdhr May 4, 2021
 Get the Ramsey flopmug.
Get the Ramsey flopmug. by Not augie April 18, 2017
 Get the Flop fuckmug.
Get the Flop fuckmug. The action of not showing up, to a pre-set meeting or event. The use of an emoticon to symbolize the action of flop saucing may also be acceptable.
by ro.sniper June 20, 2016
 Get the flop saucemug.
Get the flop saucemug. The most discusting floppy pussy you have ever seen. Or a dirogitory remark to say to someone you don't like.(Cause they dont know what it means either).
"This girl last night had the biggest Poon Flop i have ever seen."
"Get over here you fucking Poon Flop."
"Get over here you fucking Poon Flop."
by Crazylson September 30, 2009
 Get the Poon Flopmug.
Get the Poon Flopmug. 