Top Definition
A bisexual person. One who ''swings both ways''.
Did you hear about John taking a bloke home the other night?

Yes, I know he's always been a bit of a cat flap.
by paella-munching fool October 02, 2007
an affectionate name for a vagina
I licked her cat flaps all night
by R. cook November 10, 2004
Arse. Ass. The fudge tunnel. The marmite mine. The "porcelain pebbledasher".

Used particularly to describe the potential adjacence of that region to one's foot.
You waantin a kick up the catflap, ya prick?
by Pipe Downn June 12, 2011
its what holds a girls insides in,pussy lips meat curtans piss flaps bat ears
that bird i pulled last night had the biggest cat flaps i have ever seen.
by badgerroy June 28, 2008
The under belly of all cats. There are usually two distinct flaps between their back left and right legs. They are noticeable while strolling. They usually become larger as the cat gets older and/or fatter.
Caroline fed her young cat Seymour so frequently that his cat flaps eventually became so large that they dragged on the floor whilst walking.
by planetsleeep January 28, 2010
swings both ways - bisexual
Dayam, she's such a catflap. She did me AND my boyfriend.
by LadyLazarus August 02, 2004
The anus, especially in reference to anal sex.

Origin: picture the female perineum in the missionary position, and note the orientation of the vulva relative to the anus. Observce the similarities with the typical orientation of the front door and the cat flap in a house.

Other parallels regarding size and ease of human access further strengthen this metaphor.

"I've got the painters in this week, but you can go in through the cat flap if you like"
by EugeneUK August 04, 2008

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