I'm actually reading the Harry Potter books (yeah, I know, but my kids are reading them too, and I figured I need to become an "insider" to that universe before they start making references that just go whoosh! over my head) and I remember seeing the expression "a right pain" somewhere in there.
Finally, I tend to be fascinated by odd and obscure language issues and details. I guess that's just the way I am.
Anyway, I'll be more careful to explain why I'm asking, in the future.