To get an assassination medal in halo 3 by meleeing in the back. Commonly used by tsquared captain of the halo 3 team Str8 Rippin
Tsquared: Give em' the back smack baby!
by BoweTheShow June 23, 2009
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"Dude, it hurts so bad!"

"Take that back smack bitch!"

"Did you see Todd totally get fucked up, that was the worst back smack I have ever seen!"
by Tango09 March 31, 2010
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The Manhattan Back Smack is when your conducting anal sex with a gagged hog tied lady while under the effect of at LEAST 10 Viagra pills, you then smack her in the back of the head with your penis until she becomes disoriented OR passes out.

You finally finish the job by unloading a sea of hot sticky man milk on to her face...Then run like hell
Jerome: Bro! Where did you disappear last night?
You: Hey you know that hot piece of ass from last Friday?
Jerome: yeah what about her?
You: Well guess who gave that bitch the Manhattan Back Smack!
by DC is STRIPPIN March 10, 2010
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a term used in volleyball, when a person slams the ball over the net at an opposite team member. it could only be forfilled when the other person does not return the ball.
sally hits the ball up to kelly,
kelly hits the ball over the net
and cally was unable to return it
brandon to phil "what a smack-back!!!"
by sternburger November 21, 2006
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a volleyball term used to describe when some is in the process of a smack-back (look it up for defintion) and it is smack by the opposite team
sally hits the ball up to kelly,
kelly hits the ball over the net
cally (on the other team) jumps and smacks it back at kelly
brandon to phil "what a reverse smack-back!!!"
by sternburger November 21, 2006
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When one is ready to move forward with an action
"I am ready to come back attack smack in the back that hoe tonight!!"
by e-boogie August 10, 2006
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A day where all your built up emotions and feelings just come out. At first you feel blem , then it hits you. The fact that its one of those days to realize who and where you are emotionally.
Damn im having a smack back day.
by Zimba phire September 24, 2019
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