1.The act of having sexual intercourse with your hellishly cuntish ex-girlfriend in order to get back all your heavy metal CD's that she has been keeping as payback for dumping her sorry ass in the first place.
2.Having sex with Satan in order to acquire some awesome heavy metal CDs that you can't find for sale online.
Sentence(1):Shit man, my fucking ex has all my best metal. I guess It's time for Satan's Fuck.
Joe:Dude! That metal is fucking sweet! Where'd you score that shit!
Mike:Satan's fuck, man. How else?
Joe:Shit man, you sure ain't no furfag you hoopy bastard!