Time To Chuck My Muck Over Your Sister's Jubblies 

A politer way of saying to a friend, i'm going to fuck your sister then sloppy jizz over her tits

Dave: Bobby, since you wouldn't make me a brew its Time To Chuck My Muck Over Your Sister's Jubblies

Time To Chuck My Muck Over Your Sister's Jubblies by Greg_the_Smeg February 7, 2019

Your Sister a Mister

Only used by the almighty, worse then your mom gay and everything else

Caleb:Your mom gay
Kyle:Your dad a lesbian

Caleb:Your granny tranny
Kyle:Your gramp tramp
Caleb:I'm sorry but you have insulted my to my boiling point and now I'm afraid I have to use a forbidden phrase upon you
Kyle:Do it pussy
Caleb:Your sister a mister
Kyle:Just fucking melts

Your Sister a Mister by NippleringBitch March 15, 2018

National Slap Your Sister Day 

On October 25th you can slap your sister all you want and you won’t get in trouble.

Hey why is your sister crying

Because I slapped her for National Slap Your Sister Day

National Slap Your Sister Day by boppotheclown October 24, 2020

your sister was right 

Your sister was right is a beautiful song written by youtuber/streamer Wilbur Soot, on his album called “Your City Gave Me Asthma”

person one: have you Heard Wilbur Soot music ?

person two: yeah my favourite song by him is your sister was right

your sister was right by redriot December 7, 2020

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

Well, shit in my mouth and call me your sister 

An sarcastic exclamation that can be used in a variety of ways. Usually used to to emphasize how glaringly obvious something that has been said is.

A: I had to go to school yesterday.
B: Well, shit in my mouth and call me your sister - student's going to school? Really?

Well, shit in my mouth and call me your sister by DarkLite January 19, 2007

your sister 

The person all your guy friends want to fuck when they realize she isn't just yur little sister any more- she's your little virgin sister who is hot now that she has boobs and shaves her legs.

"Damn! Your sister is hot! When did that happen!?!?"
"Dude as your best friend, would it be weird if I fucked your sister?"

your sister by Sexy Stephy June 6, 2004