A guy that bangs his gf's "Flounder/Vagina" with a vengeance...A FLOUNDER POUNDER...
Mike is such a Flounder Pounder, you can tell becuase his girlfriend walks funny....
by PokemNthepink January 04, 2011
a guy that has sex with fat girls.
Damn, did you see Mike's new girlfriend? He's such a flounder pounder.
by helloxlove May 21, 2005
Slang for a massive dildo
"Damn! I ain't never seen a flounder pounder that big. She is gonna regret sticking that thing in!"
by amos quito April 29, 2005