it means that whom ever says this wants to have s*x with your mum. 'ur mum' is an expression used to agree or nuetralise a conversation.
by exwils2802802802802802802 September 26, 2023

Your mum. The person who gave birth to you. You have a mum even if you are adopted. What did you expect.
by Hsbs April 1, 2019

by YourDadLeftForTheMilk69420 July 11, 2022


"One russian counts as 5 people" Said NFKRZ "Why did you die first" Jameskii said "Because your mum gay"
by yourmumgay March 3, 2017
