Ur mom 

A cringe meme that first graders use

Billy: who’s that John: your mom

Ur mom by King silver June 5, 2023

ur mom 

a mysterious entity that seems to have done everything and has literally every trait imaginable, avoid at all costs

ur mom is commonly seen:
-banging someone
-being obese
-having the big gay
-being hot
-disowning you
-literally anything else you can imagine

ur mom by WTWTWTWTWTWTWWTTWTWTWTWTWTTWTW June 21, 2023

ur mom 

ur mom refers as a comeback or a slur to some people. You may use "ur mom" as referring to your actual mom, or you may refer to "ur mom" as a sort of comeback when someone asks you something and you don't really know what else to say besides, "ur mom" lol hehe.

hey ur mom is over there!
hey what's up? ur mom hehe

yo, why are you so ugly? nah I'm not, but ur mom is..

ur mom by PumaCoco July 3, 2023

Ur Mom 

An insult that most people use if they don't have a comeback for an insult.

Bully: You look like a crippled snake hybrid, who lost their arms in a car crash.
Person: ur mom

Ur Mom by The Definition Pro 😎 September 18, 2023

ur mom 

the ultimate insult you can't hide...

guy1: yo
guy2:ur mom
guy1:AAAAAAHHHH (fades out of existence)

ur mom by anonymous September 21, 2023

Ur MoM 

Ur Mom means that you had sex with their mom leaving them concerned and confused.

Them:What were you doing last night.

YOU:Ur MoM

THEM:what the !@$#!

Ur MoM by NASCAR guy September 30, 2023

ur mom 

is gay

ur mom is gayyyy

ur mom by anonymous October 1, 2023