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Probably one of the most hurtful insults that can cross your tongue. Used only in extreme circumstances to completely obliterate the other person.
Person 1: “I just stole your memes.”

Person 2: “well ur mum gay.”

Person 1: *dies*
by OmeletteBoy February 14, 2018
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The worst possible insilt any human can take in. If you say this your opponent will literally implode from embarrassment.
4th grader A : Ur momma so fat shes fat
4th grader B : Ur mum gay
4th Grader A: *dies*
by ThrillCosby February 24, 2018
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"ur mum gay" is a meme used by non-normies. while they unironically dab, you can laugh to yourself bc their mum gay

P.S. the correct response to this type of situation is "no u." the person who said ur mum gay with be banished to die in a small hole 5ever.
Person 1: "ur mum gay lol"
Person 2: "no u"

via giphy
by sprrite March 13, 2018
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The ultimate comback. When ever you're in a sticky situation, say this one line.
🅱🅾ℹ 1 : I fucked your mom
🅱🅾ℹ 2 : oh yeah ? well urmumgay
via giphy
by theultimatebean May 18, 2018
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commonly used as a insult that sometimes is hard to come back from
Me: Ur mum gay
Person: No u
Me: ur parents gay together
Person: ur granny tranny

me:ur dad lesbian
by <insert dead meme May 19, 2018
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