My Ass 

The biggest, chunkier, marshmallow like, and fat thing in the multiverse. It's so strong that even thanos with the infinity gauntlet it cant do anything and its also is ant man proof.

My ass is unbreakable
The infinity gauntlet is no match for my ass

My Ass by The Mica April 3, 2019

My Ass 

My Ass

My Ass

My Ass by SoulZLAYER23 April 21, 2017

My ass 

Disbelief, or calling someone a liar.

Kensi: I found a very easy Martha Stewart snickerdoodle recipe online.
(Deeks finds a plastic box for snickerdoodles as Kensie leaves)
Deeks: Martha Stewart my ass!

My ass by DarthKieduss December 19, 2013

my ass 

very stinky

my ass is very stinky

my ass by anonymous February 28, 2022

my ass 

A way of expressing disbelief. It seems to be derived from the expression "my eye!" which just wasn't vulgar.

Also used in comparison to something being described as the superlative worst.

"Single he told me? Single my ass, he had six wives. One of those Mormons, ya know?"

"I R 1337"
"My ass is 1337er than you."

my ass by junkyardprince October 14, 2003

My ass 

The most plump, juicy thing you will ever seen. Count your days because this ass might round house you and send you out of this world

Look at my ass

My ass by Bigbiddy November 22, 2021

my ass 

An expression used i n times when you find that whatever someone is saying is complete bullshit.

"My ass, your not taking my last Mountian Dew"

my ass by The World's Vampire June 26, 2003