ur sister

an un-common word used in any insult unlike ur mom.

ex: "hey Jimmy i ate 12 big macs for supper last night"
Bob "well i ate ur sister last night"

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ur sister

just like saying ur mom except for a sister as indicated in title

boy 1:u kno who i screwed last night?
boy 2:UR SISTER!!
boy 1:hey, that was mean :(

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Ur sister

that cute bitch i be fucking

Person A: hey man what are you doing?
Person B: ur sister, bitch

Ur sister

Ur sister a sibling that is your brother just a girl.

Person A: i had fun our sleepover last night.
Person B: i had fun with ur sister last night.

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Ur sister

A bitch u can smash

Micheal: what u do last night
Jason: smash ur sister

Ur sister

Ur sister is ur moms daughter.

Me:Dad do I have a sister
Dad:Ye
Me:Who?
Dad:Ur sister

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ur sister a mister

The ultimate form of the worst words to be used, even greater than "ur mom gay";"ur dad lesbian";"ur granny tranny" and "ur grandpap a trap". Those words can hurt a person emotionally,physically and psychologically.

David: ur mom gay lol
Frank: no u
David: ur dad lesbian
Frank: ur granny tranny
David: ur grandpap a trap
Frank: ur sister a mister
David: *explodes into oblivion and his soul is being eaten by minecraft youtubers*

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