What's the difference between prostitution (sex for money) and shooting a porn movie (sex for money in front of a camera) ? Not much, it turns out: a state of mind, mostly. defective yeti did some research, and tells us all about it.
Be sure to read the comments, where his mother makes an appearance.

Thank the Lord for legal ambiguity.
legal ambiguity.An oxymoron if there ever was one.