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Ur mom gay 

The modern day example of a “yo mama so fat” joke. Often used on elementary and middle school play grounds. So yeah... if you don’t wanna sound like a child... say “YO MAMA SO FAT, SHE USES THE HIGHWAY AS A SLIP & SLIDE!” . Veteran move.
Edgy 14 year old: Ur mom gay!!!

Edgy 12 year old: no u. 😂😂😂

Ur mom gay 

You: Ur mom gay
Me: No u
Ur mom gay by Moo_Mav March 14, 2018

Ur mom gay 

A meme that is actually older than everyone thinks it is. Originally spawned from the YouTuber Pyrocynical, who received a tweet from BamanBoi in mid 2016 that read, "you're mum gay".
Pyro: @BamanBoi - ur mom gay

(Pyro chuckles softly and then erupts into heavy laughter)
Ur mom gay by semem knad April 14, 2018

Ur mom gay 

" Ur mom gay " is a semi-joke, it shouldn't driectly provoke normal people but some snowflakes may get insulted
turboTROLL: - Ur mom gay
You : - Nah, ur dad is lesbian and your fam is backward compatible
turboTROLL: *cringe death sounds*
Ur mom gay by PopUPpoop March 20, 2018

ur mom gay 

The most deadly, harsh and shameful insult in the entire existence of the human race.
Billy- "Your an asshole!"
Tom- "Ur mom gay lol"
Billy- *dies*
ur mom gay by cato_boi May 12, 2018