The movie which you put on while your trying to lay a broad instead of just watching tv. Usually a horror movie, this gives you something else to look at while railing the questionable slut you've brought to your parents basement. Not to be confused with a porno, or a sex tape.
"how'd you lay that ho bag last night?"
"Dude I just put on the sex movie, and she melted like butter."
"Your the fuckin' man."