A person you encounter whom is so irritating, you develop an insatiable urge to smack them uncontrollably with both hands at a rapid pace.
Dude! You spilled my soda! Chill out You Smack Attack!
by Rodericks July 10, 2008

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Top Definition
When the urge to smack someone, particularly in a bar or social setting, becomes overwhelming to the point of having to control it.
Variation: Snack Attack: late night drunken snacking. Unlike Smack Attack, Snack Attack is commonly uncontrollable.
I'm surprised I didn't get kicked out of the bar last night for almost smacking that guy in the mouth. The Smack Attack was in full force!
by Rockalita September 26, 2008

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The worst of something, opposite to Sparkarama. Usually refering to girls.

Created by OllieOC
Liam Chinese: 'Ollie, check out this girl she's really fit.'

OllieOC: 'Are you fucking kidding she's Smackattack'

Liam Chinese: 'Your right as usual.'

OllieOC: 'I Know.'
by OllieOC March 25, 2011

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To be under fire or harassment from colleagues or friends, usually involving insults. A sustained verbal onslaught.
Shucks, my mum just gave me a 10-hour smackattack for not tidying my room.
by SuperMegaUberMike May 17, 2008

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The Urban Dictionary T-Shirt

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