ur mum is a person who likes your dad. she also likes sleeping in a weekdays and being late for work. ur mum is someone you can count on to make a burnt omlet at midnight. ur mum likes going to partys celebrating kids birthday partys; and especially the random neighbor kids who lives next door which she likes more than you. she typically has a farting issue when shes at campfires.
kids friend: hey look its ur mum
kid: thats not my mum thats ur mum
Ur mum is used to describe a hot person such as your mother, it is a complment and means alot of love.
Ur MUM is so hot
People use this as a joke as making fun of people's mothers by simply saying ur mum
"Yo I banged ur mum last night"
1- “holy shit, whats that big fat monster?”
2- “what?? where?”
1- “oh. its just ur mum”