What is Mum Bum?
1.
a girl wit no ass, a saggy ass, or jus an ass that looks something like a 50 year old womans.
Steph shouldnt wear tight jeans because she has a mum bum and its discusting
See
2.
The flattening and/or widening of the ass after child birth...
"Oh Look at her...thats a real mum bum..." or "Look at her she aint got no junk in that trunk, she got mum bum"....
well look at the bums of some moms and you'll see what we mean.... it's very obvious!!(looks like you've spent the last 3 days laying on your back and your ass is flattened...)
See
Random Words:
1.
Just when your about to skeet in the woman, you donkey punch her so she passes out then you proceed to jiz in between her legs. Next mo..
1.
One who spends way to much time on the internet chatting or doing other miscilleanos activities.
Jake is such an internet loner, he has..