ur mum is pretty much ur mum aka also known as ur mother and ur mum is a very common occurrence in a conversation with your friend
if u were talking u say "hello my g ur mum looks leng"
an insult that is so painful to the opponent that most of the time he just dies
Jeff: your birthday was good
Sam: ur mum was good
Jeff: *dies*
The ultimate insult that can work on anything just by slightly altering someones sentence with 'ur mum' .it can also be written as 'ur mom'.
person 1: "you're fat"
person 2: "ur mum is fat"
person 1: "that insult is so unoriginal"
person 2: "ur mum is so unoriginal"
the insult that has one weakness which as known as no u
and a inssult thats better ur dad lesbian