look up any word, like ac slatering:
 
1.
When a person is annoying me specifically
He keeps interrupting me when I am busy, so he is a pain in my ass.
by Jess Z October 22, 2008
 
2.
a real pain after a person experienced anal intercourse
Ouch, I need to go to the doctor because I have pain in my ass.
by Andav October 22, 2008