Ur mum not cool 

It means ur mom not cool

Jimmmy hey Ron ur mum not cool
Ron No u
Jimmy fucking dies

Ur mum not cool by Nooblegend2769 May 7, 2020

Ur Mom Gay 

Ur Mom Gay is the Almost the strongest phrase in an argument. It can only be defeated by a reverse card or no you

Guy: UR MOM GAY!
memer: *smirks NO YOU!

Ur Mom Gay by Emmystockman May 12, 2020

Ur mom 

The two words that are used when a nine year old gets salty

Fortnite nine year old: "Fortnite is best!!1!!111111!
Sensible Person:"No it aint"
Salty nine year old "Ur mom"

Ur mom by Somedoodthatisbored May 20, 2020

Ur ass don’t lie 

When a girls ass is rlly nice

John said to danella ur ass don’t lie

Ur ass don’t lie by Xloser19X May 23, 2020

ur mom 

A fucking stupid sentence that nobody fucking likes.

Guy: Where is Old Zealand?
some random kid: Ur Mom

ur mom by L.KUDFHGDSL June 8, 2020

UR MOM 

its ur mom duh

ur mom gay

UR MOM by CHOOCHOOTRAIN123 June 9, 2020

ur mom 

look, I know you´re just a 10-year-old kid that somehow ended up here. shouldn't you have school now?

kid 1: haha lol i roasted you
kid 2: ur mom

ur mom by a guy named adam June 11, 2020