expression used to display one's disbelief in another's statement. also used to tell someone no or disagree with someone.
Tom: Dude, I hooked up with Carmen Electra last night.
Billy: Your ass hurts!
Gina: Do you think I could borrow $500?
Amanda: Your ass hurts!
by Joe Sausage May 18, 2005
A term of incredulity and suspicion, to be used in the same vein as "I don't believe you" or "Whatever".
"Where's Shirley?"
"I don't know, I haven't seen her."
"Your ass hurts! I saw you talking to her just five minutes ago!"

(message on ATM screen) "Please enter your correct PIN."
"I DID enter my correct PIN! Your ass hurts!"
by embzy June 24, 2009