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!
by DarthKieduss December 19, 2013
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very stinky
my ass is very stinky
by February 28, 2022
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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."
by junkyardprince October 15, 2003
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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
by Bigbiddy November 23, 2021
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being super fucked up from a drug of some sort, but being at a relaxed state
“i was on my ass when i took 2 bong hits and an edible
by aidenthetank December 9, 2020
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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"
by The World's Vampire June 26, 2003
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Exclamation of surprise, amazement or frustation. Similar in usage to Aussie "Fuck me dead"
I finally passed my finals...Clog my ass that is awesome!

Clog my ass, I've just missed my train!
by HansSausage August 10, 2020
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