To show that ur mom, who is a woman, likes another woman, like your friend's mom which makes your mother, gay. A of memes, it's spelled "gae".
by loblock_pillows June 3, 2018

Ur-Mom-itis is a common disease spread by Anthony 101 (you’ll have to get this joke only if you read Anthony 101) To get rid of this disease, Anthony 101 needs to say “Ur mom!” Three times willingly.
by Haters_gonna_hate_on_me February 5, 2019

Ur mom jr means your mom junior, This word can simply be used in different ways for example..
Karl: Hello! What was your lunch today?
You: Your mother junior.
Karl: Hello! What was your lunch today?
You: Your mother junior.
Ur mom jr.
by urmomdoesntloveyou December 4, 2021

by bigshagger July 20, 2018

by SUCKMYCOCKBIIIITCH July 4, 2018
