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!
There is regular diarrhea, then of course there is super diarrhea. Satanic diarrhea makes super diarrhea seem a pleasant walk through a pleasant green field of wild flowers.
Super diarrhea often results in needing to buy a whole new wardrobe due to contamination, and 9 out of 10 people who suffer from this affliction end up burning their house down afterward because that shit smell ain't going anywhere anytime soon.
Those fortunate enough to make it to appropriate facilities in time, will often times have their anus blown out by at least 4 inches and honestly, even if you're on the toilet, it's somehow going to find it's way onto the walls and ceiling.
Hey man, what happened to Joe? Last week he got a promotion and bought himself a great car and started to fuck a really hot chick. Now he just rolls back and forth in the corner and cries like a common furfag(or emo)
Ya man, he got the Satanic diarrhea last weak, poor bastard.