Ur sister is a mister

An insult meaning that your sister is actually a transgender man. This insult is so rare it has only been said by 4 people and was buried in the Egyptian pyramids to never see the light of day.

Guy: ur mum gay
You take out a golden box
Guy: Holy fuck hold on man I was just joking please don’t do this
You: Ur sister is a MISTER
World explodes

by RegimeoftheGalactic March 14, 2018

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Ur sister a mister

A very dangerous phrase, not to be used lightly. Has risen from other primitive phrases such as ur mom gay, and ur daddy lesbian.

Carl: Ur mom gay
Dylan: ur granny tranny
Carl: ur sister a mister

*every world ceases to exist as God himself falls down onto his knees and weeps

by Swaggysplooosh March 15, 2018

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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"

by ttttoday junior February 19, 2019

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ur son a mum

Single most powerful insult in the universe, stronger than ur brother a mother. Merely uttering it will create a giant black hole that implodes the multiverse and all its parallel dimensions.

Bob: Ur brother a mother
*massive earthquake breaks out*
Carl: Ur son a mum
*All life is annihilated, the universes collide and spontaneously self-destruct*

by meep moop beep boop March 21, 2018

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UR SISTER MISTER

The most destructive comeback to date. Only to be used in very dire situations. (Can be used if target doesn't have a sister)

Joe: ur mom gay
Tim: no u
Joe: UR DAD LESBIAN

Tim: UR GRANNY TRANNY
Joe: UR PAPPY TRAPPY
Tim: UR SISTER MISTER
*At this point time ceases to exist. The very fabric of the universe has be torn to shreds, the entire 3rd dimension is incinerated and all life on earth ceases to exist*

by lazer unicorn March 14, 2018