What is Dead Horse's Ass?
1.
saying that means what you are asking for is absolutely not going to happen.
When somebody asks for something that you're not going to give them or do for them, your response is "Sorry, but I'd say you're looking up a dead horse's ass"
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1.
A form of faggotry so vile that it scares away light itself leaving the bringer of the faggotry and his nearby surroundings into a shrou..