A common response people use for annoying, small, or silly questions. The phrase "ur mom" probably came from yo mama jokes which have been around longer than many of us have been. "ur mom" is, simply put, an extraordinary creation. People who use this phrase are highly intelligent contrary to popular belief.
person 1: hey, have you seen my glasses?
person 2: no, but you know who has?
person 1: who??
person 2: ur mom
(this is the only thing i could think of even tho, i too, use this intelligent phrase daily)
person 2: no, but you know who has?
person 1: who??
person 2: ur mom
(this is the only thing i could think of even tho, i too, use this intelligent phrase daily)
by totallynotarella April 20, 2022
Get the ur mommug. 
You are called Urs if you have only one ear or if you like to play with hammers. Also Urs is a common name in switserland and ursistan.
by Achmed harrak June 21, 2017
Get the Ursmug. by adwaasfsvd December 1, 2022
Get the ur gaymug. by amerbouss August 17, 2018
Get the Ur mom gaymug. by Nooblegend2769 May 7, 2020
Get the Ur mum not coolmug. by lozzy mozzy October 7, 2021
Get the clobber ur nogginmug.