A person who is acting like a total dick, or an arsehole and being inconsiderate.
"You know that pint Alex was drinking, I pissed in it."

"Oh my god, you gammy cunt !"
by Abbyy182 February 26, 2009
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A gunky jelly blobby fanny, like a gone off apple pie.
BOY1: I fingered this girl last night

BOY2: Was she clean and tight man?

BOY1: Nah she had a mank gammy fanny! i was almost sick!
by orangelemmonlimebanna February 9, 2012
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An old women without teeth that enjoys performing oral sex on younger men.
I hooked up with this 68 year old women last night. That gammy gummer can suck a mean DICK!!!
by Word-slinger_9000!! March 23, 2017
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Irish slang, meaning a feen (quite simply Irish slang for ‘man’) who is gammy (meaning disgusting and vile). This phrase is commonly used as an insult in online gaming, towards others who have beat them, or are cheating in some way.
Felix: “Look at that langer over there.”
Thomas: “That? That’s Chris. He’s a right gammy feen!”
by XxHarvzBackxX July 27, 2020
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Originated in the north east of england. Refers to your arsehole just after you've taken a shit and there are bits of poo stuck onto it that need wiping off.
I've just taken a shit and I've got a proper gammy eye. This sucker is gonna take ages to wipe!
by cragus2000 December 3, 2006
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The boss was being a tosser, so as Jill was surfing the crimson tide, she pulled her blood bullet out of her Gammy Axe Wound and dipped it in his tea when he wasn't looking
by jamfsob August 12, 2003
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a bad ache, making you shout nonsense comments such as "Ah the bugger!" this will give pain in the leg, leaving the owner unable to walk to morris. The owner will also want items such as cigs fetching.
ooh it does hurt, this leg of mine!

ah you've got Susan's gammy leg!
by Warren Mortimer April 2, 2008
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