1. The action/process of fucking someone good.
1a. Hittin' it
1b. Tappin that ass.
1. Damn, Keri looks good as shit!..I just wanna smash her!
by Tai June 30, 2003
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to get piss drunk, often involving stumbling and incoherent speech
by PARTY October 20, 2002
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1. to fuck the shit out of somebody
2. the more hardcore form of "smacking that"
"dude, see that girl over that, id smash that!"
by ninja warrior July 7, 2008
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To indulge in copious amounts of drinking for at least a 2 day period, ruthless banter that is completely inappropriate and spoken extremely loud around strangers.
We're totally gonna smash it in tonight dude, it's gonna get messy.
Let's smash it in bitches.
Dude we totally smashed it in last night, it was awesome!
by Pablo Smashitini October 21, 2009
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to have sex, sexual relations any sexual manner, to fuck
We been together for 2 days now when you going to let me SMASH?

Man! I went in there at 6 I didn't leave til' 10 I was SMASHING all night.
by Rickey G December 15, 2003
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Had sex with, used in past tense.
Guy1: Did you see the Colts game?
Guy2: Nah I smashed your gf during it.
Guy1: ......
by Most Hated September 29, 2009
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