"Ya nan" is commonly used as an insult towards people who you dislike or envy. Ya is and abbreviation of the word your. The use of their Nan in the insult shows you are willing to 'dis' their Family!
"You are and Idiot Jack"
"Well least I don't look like Ya nan!"
by Billybongo November 8, 2007
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A way to say attractive grandmother. Often used by people with little or no intelligence.
I goosed ya nan while screaming "Wiiigii!".
by Shmoo December 11, 2004
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THE ULTIMATE COMEBACK AND INSULT

It’s like ‘ur mom’ but ‘ya nan’- it is a better comeback than ‘no u’ which honestly I would’ve never thought existed- It can also be used as an ‘ur mom’

Ya nan also rolls off the tongue
Bob: u ugly
Jefff: ya nan
Bob: *fucking dies*
by Ur mom is a milf September 23, 2021
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