,,your mum'' is a commonly used term in all of America to answer a ,,diss'' or a ,,insult''. It's often used when the offended person doesn't know what to answer when confronted with a ,,diss''. Saying your mum usually means: Your mum has to do something with what you just said.
A guy: Yo, your so ugly omg. I can't imagine living in your body, must be a terrifying Life
Another guy: Your mum.
A guy: ,,dies''
Another guy: Your mum.
A guy: ,,dies''
by Nils der dude May 8, 2023

your mum is a another word for ‘sex toy’, please be aware they have flappy fannies. Let the lord deal with her sketty self. her names either Ava or Rebecca.
by poomam October 19, 2019

by pagey124 December 31, 2021

person 1: damn bro, is that your girl?
person 2: no, but guess who i slept with last night.
person 1: who?
person 2: your mum.
person 2: no, but guess who i slept with last night.
person 1: who?
person 2: your mum.
by irllylikegirls69 May 3, 2022

(your mum) is a dirty slag
by JoeBidenSonEvenTHoughImAbrit69 November 11, 2021

Used to reply to “your mum”. Can be used against someone else however is never actually relevant to the other persons mother.
by Ug8tar August 12, 2022

A mother or a mother of a child. The word can be used as an insult on someone typically on your mum or you.
your mum.
your mum.
Steve: "Hey Jimmy tell me a joke"
Jimmy: "your mum"
And that was the last time we ever saw Jimmy again...
Jimmy: "your mum"
And that was the last time we ever saw Jimmy again...
by Senor Ghost November 25, 2021
