up in your ass

Put your dick, fingers, leg, a bottle or whatever you want in somebody's ass.

Mike: Hey asshole (showing a finger)
Bob: Hey, this up in your ass

up to your ass in alligators

Deep in shit way over your head.

Up your ass

It is where things belong;)

Someone: Wheres my pen?
You: Up your ass!

It's up your ass

Something you say for a joke.

Your friend where is it?
it's up your ass!

up your ass

An apology for clingy or needy behavior such as blowing up someone's phone, or knowingly pestering someone for their attention.

Me: sorry I've been up your ass today.
Friend: thanks, but you need to not text me so much.

up your asses

When a group of people are talking shit about you.

CAL:"I got it now 'you're a virgin"
ANDY:"YOU GUYS ARE SO UP YOUR ASSES"

Shove it up your ass

An insult that is used to show disinterest, or frustration. To dismiss a wrongful statement or action.

Bill Gates: I have so much more money than you!
Random person: Go shove it up your ass!