Definition of "my ass" []

• (vulgar) Indicates disapproval, disagreement, or disbelief, often with a tone of disregard, disdain, or disgust. (interjection)
• I, myself; oneself in the third person. (pronoun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "By the end of my shift, my arms throb, the film on my eyeballs peels like an onion, my ass feels stuffed with novocaine, and my lower back is in such excruciating pain, I have no energy for anything in my bed except sleep."
• "I once had somebody charge himself airline tickets on my Visa—and you know, that card never even left my billfold, I had it on my person the whole time, in my ass pocket—and here it comes charging me, anyway, some somnabitch flying from Vegas to Boston."
• "I swallow the Vics back down and stare in the mirror and load up a shot of testosterone and plunge it into my ass in defiance."