To be hit or struck in an online game such as Halo or Counter Strike. This is also used as an aggravated insult with players often yelling this into the microphone when they beat you down.
*person gets hit*

Player1: GET SMACKED!!!

N00b: Darn!
by Mack_T March 5, 2008
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
If somebody decides to vomit on my jeans or shirt (shoes I am not too worried about) Then a short sharp smack in their face will ensue!
*bleuurrghh* *splatter* *dribble* *frown* *tense* *smack!* "ow, that hurt you fucking cunt!" *smack* "ok, I'll shut up!"
by Valoch.D.M November 9, 2004