A wasteful vagina. Often belongs to someone of a hideous frame and face, therefore a perfectly good vagina could be wasted because no one would want to fuck a beast.
(ugly person walks by)

Person 1:

OMG did you just see that girl.

Person 2:

Yeah. She is such a waste gash
by Fattybob June 6, 2010
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a girl that shows her pussy to anyone who asks.
Boy: yeah bruv that girl iz waste gash.
Boy2; yeah i know so is her mutha
boy1: so what your mum is waste gash to.
Boy 2: thats well harsh, yo mum is a sket cadet, fool.
by stallwood123 March 14, 2008
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a way of describing typical chav music.
guy 1: did you hear that new song by n dubz

guy 2: no, is it good,

guy 1: hell to the no, its waste-gash
by Pendoo341 April 9, 2009
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Someone that sleeps with their mates boyfriends. Really ugly and has a body of an 8 year old boy. Shovel chin.
by Jayman11 January 10, 2008
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1- A vagina which memes a pile of rotting cabbage. see also: blue waffle and bumtang

2- A slutty female which you keep around for sex but whom you have no respect for and can ditch easily.

3- A woman who is attractive when found due to an amount of foundation large enough to build a skyscraper on top of, however the female will likely later found to be quite skanky
1-
A: hey man that chick you were with last friday, you ever get anywhere with her?

B: No man she took her panties off and she had some mad waste-gash

2-
A: dude, that waste-gash you've got back home is starting to smell funny you should get a new one.

B: I hadn't noticed to be honest but i guess you're right. Do you want to go find a new one at the mall?

3-
A: Dude you were totally hitting it up with that chick last night at the club, you tap that?

B: Yeah man but i woke up and she was a total waste-gash.
by Megalow February 17, 2010
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Dirty Ghetto Waste Gash is oftenly used as an insult, in many cases it can lead to severe beatings and shoe marks in a males genitalia.
When Jack shouted " F&*k you, you Dirty Ghetto Waste Gash" at the Chav, he had to run as fast as he could or he wold get the shit kicked out of him. :D
by xXRoNXxWarriors <Xbox Gamertag December 21, 2008
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