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

Ur sister is a mister by RegimeoftheGalactic March 14, 2018

hey mister 

A phrase used when you're a loli vampire mistress who wants to have a sex with a Japanese mister

hey mister, do you want to have sex?

hey mister by deb00 November 21, 2018

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

Ur sister a mister by Swaggysplooosh March 15, 2018

Sister From Another Mister

Noun

1. Similar to "Brother From Another Mother", this describes a female friend that has grown such a strong emotional bond with a different family that she appears to be or could be considered to be part of that family, despite having no blood relation.
2. A step-sister that has resulted from having two different fathers.

Suzy: I love Katie. She's my best friend and I couldn't live without her. My parents love her, too. She's my sister from another mister.

Sister From Another Mister by IQuarent September 6, 2013

Hey Mister 

Verb. Used when a person asks a stranger for something they cannot easily acquire, usually alcohol or cigarettes.

I'm so desparate for alcohol I'm about ready to hey mister a bum.

Remember when we had to hey mister 20 people before we got a cigarette?

Hey Mister by **R** November 16, 2005

your sister a mister

only used as a last resort once your homeboy hits you with to many no u this cannot be countered until we find the holy trinity

carl: your mom gay

me:daddy tranny

carl:no u
me:your sister a mister

carl ;evaporates

your sister a mister by tg68tr578 March 14, 2018

Your Sister is a Mister 

The ultimate comeback that were Steven Hawking’s final blessings to us before his passing.

Steven: Your sister is a mister... *final breath*

Man: What an OG that man was

Your Sister is a Mister by The Kluxinator March 15, 2018