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 person who comes to slangdefine and posts the name of the person who they hope (probably in vain) to some day end up with. These pe..