Something done by Heterosexuals and Homosexuals alike, it's the act of placing an undisclosed amount of drugs on the tip of one's dick and interpeniously inserting it into anothers anus.
My gal and I were looking for a way to use up the rest of the drugs, so I bent her over, made her grab her ankles, and gave her a smack fuck.
by smackfucker August 3, 2009
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Back the Fuck Up Before You Get Smacked the Fuck Up - A Term Or Sentence used when someone has done something wrong or has fucked up. Or when they are obnoxious.

1. When You talk to much
2.When you forget to pay a pimp
3.Fucking with people.
4.What the hell is wrong with you?
Bob: Hey yo ted wheres my money Nigga?
Steve: You Better back the Fuck up before you get smacked the fuck up bob
by Tech581 September 23, 2009
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When you say something wrong, stupid, or threatening, and get threatened.
Jeff: yo girl is ugly asf
Ethan: better back the fuck up before you get smacked the fuck up g
by ezra24 April 3, 2023
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Beat someone mercilessly for an obscure act. Severe punishment for doing something illegal or bad behavior.
John cracked an inappropriate joke on Jake's girlfriend, Jake smacks the fuck out of john.
by REDOXNINJA February 3, 2016
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