Ya mum is a term commonly used by human beings for several humorous reasons.... The first of which can be dated back to the year of 1874 and is exactly this...

REASON 1: You are a retard and have nothing more intelligent to say at this moment.

REASON 2: You're a funny kunt(or so you believe) and think you're smart.

REASON 3: YOUR MUM
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See what I did there? I was(am) actually too drunk to Write anything decent as reason 3 because I am beyond thinking at this current time.
ya mum is a stone cold fox
by The Master of May 13, 2008
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retarded answer to any questions you cant or dont want to answer
kinda like answering with ya mum buts it gives you autism
Me: "Do you watch scat porn?"
Friend: "Ya mum's ya dad"
by cancerious fucker May 27, 2017
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This word does not need a definition. It doesn't make sense, it's just funny. USe it in any situation (E.g. uncomfortable, awkward, happy, sad, excited, etc.)
Mate 1: "What should I wear today?"
Mate 2: "Ya mums skin"
by yamumsskin March 6, 2020
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A quick and witty insult to flabbergast the other person. Works like a charm and acts as the ultimate insult.
Karen: "Your car is too loud!"
Nik: "Ya mum's a sparky!"
by dogtrue August 8, 2020
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it's your mums skin people usually bring it in a container to there friends house!
hey is ya mums skin itchy?

did you bring it in a container
by ya mums skin March 5, 2020
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The insult used by only the most intellectual of intellectuals
man 1- fuck you
man 2- ya mum gay
man 1- curls up into corner and cries
by my name jeff xd March 22, 2018
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