your in 

When someone has fully accepted you as their significan other. "Your in" basically means yall are compatible.

When Stacy said she loved "The Red Hot Chilli Peppers" Don said ,"your in."

your in by Obleque nipple September 5, 2016

your mums muff

its an insault to you and your mum muff saying its crusty

q:hello there james
A:your mums muff

your mums muff by alfieclarke November 20, 2007

Your Mum 

A moment of utter annoyance.

Oh Your Mum, I just farted and followed through.

Your Mum by Jacobus Driver December 21, 2008

Your Sisters Throat 

a personal dig on a friend or enemy, depending on how you say it.

Implying an extreme Blow Job from their sister.

driver honking his horn: "Get out of the way asshole!"

Joe Flicking off driver "YOUR SISTERS THROAT!"

Your Sisters Throat by twobarbreak December 22, 2008

Your Mom 

What I did last night.

I did your mom.

Your Mom by The Guy Who Did Your Mom May 1, 2010

Your Mum 

A classy lady of fairly hefty build.

'You're a good player and your mum is a classy lady.'
-bungie.net dynamic header

Your Mum by stormrecon April 17, 2011

Your World 

(1) The thing that Urban Dictionary keeps bugging us to define. Finally we can define it.

(2) What we live on, the world that God created.

(3) All the planets in the universe count as 'Worlds' that God created.

(1 eg.) Define your world!

I did it already, f*cker!

(2 eg.) We live on the world called earth.

(3 eg.) Mars, Pluto, Moon, Sun, Earth, Uranis, Jupiter, Star all count as worlds.

Your World by I D Fine August 31, 2013