smack it

To masturbate. A synonym of spank it. "It" refers to the penis.
Brandon: "Dude, want to head over to Pat O'Briens and catch the Sox game?"
Mac: "Uh...maybe later. Your sister just put up a new Facebook album full of spring break bikini pics, and she's looking pretty damn good. I'm just gonna hang out here and smack it to that a few times."
Brandon: "What??? Oh no you didn't! The only smacking that's going to happen is me smacking you up!"
by Nicholas D March 08, 2009
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smack it

To get things done. Giving your 100% on something. To go all out.
Let's smack it. Dude, let's smack that time-lapse! Just smack it!
by wolfie299 April 20, 2018
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smack it

to get something done, to do it quickly and with perseverance.
Ken: Do you wanna help me write this essay with me?
Dan: Yeah, lets smack it.
by kart24 April 21, 2018
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smack it

Invented by Tom Mace on Casey Neistat's Youtube Channel, to "smack it" is to put the work in, commit to it, and to not go back.
Casey: Dan, I really don't feel like doing that timelapse today
(Dan wakes up)
Dan: Huh???
Casey: I said, "I don't feel like doing that timelapse today"
Dan: Aw c'mon dude, let's smack it
by Tetrys April 20, 2018
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Smack Smack

1) The sound a thumper makes when it busts off

2) A common adlib used by certain rappers from North Oakland (Lil Rue, HD, etc..)
"Every day it's like I got some new niggas to kill (SMACK SMACK)" - HD on Minister Of Defense / Extortion Muzik 2
by yay area representative March 31, 2011
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Smack Smacks

The more updates name for "sandles" or " flip-flop".
Derrived from the sound the "shoe" makes when hitting your foot.
by Cher-in-Surrey November 02, 2010
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smack

Heroin. Most frequently used in the 60s.
When the smack begins to flow, I really don't care anymore...
by Lurhstaap December 29, 2003
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