The most insulting phrase to ever exist. It is basically insta-kill.
Me: I don't like you!
Billy: well, I don't care.
Me: Well... UR MUM GAY!!!
Billy: *gasps* ahh nooooooo *dies*
by Oli EgS April 23, 2018
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Usually used by 13 yr old edge Lords, ur mum gay is a ultimate comeback, kinda like hanzos ultimate. It will completely change the tides of a flame war
Person 1: your mom so tiny she could only clime to the top of mountain dew
Person 2: ur mum gay
Person 1: admits defeat and drinks bleach
by dank.meme.theif.lord March 2, 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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a stupid insult made by dumb 11y/o boys
kid 1: u cant use my crans
kid 2: uh- well...uR MuM gAy
kid 1: ugh, ur so annoying -_-
by _.dido_. July 21, 2020
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The most amazing and hurtful way to insult a person
"Ur mum gay" *dabs*

*cries then dies*
by Skippy dingle chalk September 5, 2018
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