'Your mum' is a cuss originating presumably from one of the many ghettos in the UK. Mainly used by chavs, it is a comeback to an insult that cannot be beaten in any other way. Also used as an answer to almost any question, it is one of the most universal cuss downs of the twenty first century as of yet.
Initiating insult:'Shut up you ignoramus.'
Comeback:'Why don't you tell your mum to shut up!'

or

(someone pointing at a hippo in a zoo)Q:'What's that?'
A:'Your mum!'
by GEJH October 17, 2006
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The only insult to not only insult someone to fuck but also make you laugh because it is so old school
'Hey, did you make that smell'
'Your mum smells'
:(
by ©™ October 15, 2003
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The best comback in the world!...'your mum'

"Your mum's so dumb she got hit by a parked car"

"Your mum's so fat she puts mayonaise on her asprin"
by the village people June 18, 2006
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bloody townies who cant think of a better come back say it. its become so common not even people whos mums are DEAD give a shit anymore.

Related to: and your dad, thats what your mum said last night, mother fucker, y tu madre.
A:You #!&£££)"(&*$£$&££$*£($£$&
B:And your mum.
by drako December 22, 2004
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Your mum is a hot milf
I had sex with your mum last night
by Ihavefeelingsforu November 20, 2021
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Q:Who was the first president of America?

A:Your Mum

Q:What is the 58th Pokemon in the Pokédex

A:Your Mum
by Your______________Mum March 2, 2018
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