An insult used by Year 5 kids to insult eachother. Usually, a brave kid will say 'no you'. The one who started is called gay for however long the others decide.
Bill: Your mum gay.
Gareth: No you.

Year 5 kids: Bill is gay! Bill is gay! Bill is gay!

Bill is ruined for life
by Tsar Nicholas II April 7, 2018
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When someone tells you that your mum is gay and that she likes men.
Person:

Lol Your Mum Gay.

Me:
:(
by Blorty Bart October 19, 2017
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when you're roasting means that someone is calling your mother gay witch she is ;)
NO U is a comback to the roast of "your mum gay"
by helloyourmumgay June 7, 2018
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A phrase that is commonly said to insult a loser who has done you dirty. Also said right before making out.
“Hey dumbass! Your mum gay!”
I said “your mum gay” to her and then we made out for 10 minutes.
by gaylobster February 12, 2018
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the conversation ender of the century. if used in the right context is life ending. i have only used this ever once and legend says that the victim is still in a coma to this day!
joe: haha you smell like my uncles noncey slippers.
me : ooo that one stung a little but watch this.....
me : your mum gay!!!!!!!!!!!
joe: *collapses and falls into cardiac arrest and eventually a deep coma*
me: haha joe suck deez nuts.
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Your mum gay lol is possibly the GREATEST playground insult of all time. With this insult you can end someone’s playground roasting career, even their life. Sometimes comboed with a LOLXD or a savage dab at the end for maximum roast levels
Billy: yo your so gay man
Jeremy: yeah well, your mum gay lol **savage dab**
Billy: oh sorry Jeremy I’m gonna end my roasting career and hang myself on the monkey bars
by Itsyaboyhughman February 14, 2018
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a thing to tell people because its true
person a:oi bruv u smelly head
person b:no your mum gay pulls out uno block turn
by Dont ask what my name is December 30, 2020
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