a person who is keen to get his hands, tongue, knob etc into a nice bit of beaver at every and any opportunity
Look at him! he's right into her pisher like a fanny rat
by Big Assed Ray February 04, 2006
2 more definitions
A fannyrat is usually an amorous male who has no scruples where he parks his penis. He usually seeks out females who look like they will drop their draws at the earliest opportunity, he will often have no morals and all women are fair game. He is also bigoted in his opinions and takes great delight in letting everyone know how many women he has poked.
That Ardon character thinks he's a proper fannyrat
by fannyrat June 14, 2009
an un-used tampon
"Ahh gash, the painters are in, anyone got a spare fanny rat?"
by a joker April 07, 2009