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A talking computer in the 2009 movie "Moon". Voiced by Kevin Spacey.
Sam: You need to get laid.
I'm going to go back to work.

by Jimmy Man December 17, 2010
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A girl who enjoys being filmed whilst having rough sex with many men up every orafice surrounded by images of wild boars. It is possible to tell whether a girl is a 'Gerty' due to her large 'assets', small amount of clothing and badly dyed hair. Commonly mistaken for an Essex Girl.
Guy 1: 'I had a very weird night with that girl i picked up'
Guy 2: 'Did she want to be filmed having sex with many men in a room full of pictures of wild boar?'
Guy 1: 'Yeh! Do you know her?'
Guy 2: 'Maybe, she sounds like a Gerty though'
by Fraisin January 05, 2010
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An abbreviation for a dirty old smelly grandma who wears a merkin.
person 1: wanna come to the movies tonight?
person 2: oh man i cant, i've gotta go visit my gerty!
person 1: dude, that's gross.
by ilylays May 14, 2008
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-It's so hot I'm sweating balls
- Yea, I've got a gerty just sitting here

- Gross
by 27DMac July 29, 2018
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