The effect of swallowing an ecstacy pill. the effects usually make people more uncontrolable making them dangerous!
man when my pupils expand and i look like i'm about to kill someone i be smacked down!
by Derron February 22, 2009
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In other ways used as the phrase "laying down the law"....
You let that bitch leave you with the kids and went out drinkin...? You better be layin some smack down...
by john harrison January 16, 2004
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To shut someone up by making them look like a dumbass. Mainly, when a person believes’s they are right about a certain thing but, are in fact wrong. For example they believe a (i.e. Person made a certain song) but it fact it is a totally different person so they are proved wrong and humiliated in front of a crowd. It is normally proclaimed by one of the on lookers if they believe the diss is worthy of the recognition.
1. Person 1: "I dont care what you say, drinking everyday is better then smoking weed every day for your body."
Person 2: "Your a fucking moron you obviously believe everything D.A.R.E taught you!"
Crowd: "Ahahahahahahahahah"
Person 3: "Smack-down"
by [J.C] October 28, 2005
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Naked smack down (noun-verb) usually occurs when one of the guys in your group decides to get completely naked when you and the fellas are together hanging out. Most times a slap will be thrown by the naked man at and/or towards a fully clothed member of the party. This prompts that member of the friend group to also get completely naked and so on and so forth. This practice is extremely dangerous and will usually result in many palm sized welts on your butt and back. Naked smack down are completely unannounced so always be on the look out for the most liable member of your friend group.
Terry: Hey what happened at Tommy’s the other night? I heard someone ended up in the hospital.

Larry: Yeah Brett decided to start naked smack down and Ray got caught in the eye by Harry’s testicles when he was trying to choke slam Dylan.

Terry: Gnarly! Ray’s wife is gonna be pissed!
by Leland Bruce January 29, 2023
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To take control of a situation with the intention of resolving it as rapidly as possible
I am gonna go in there and lay the smack down
by KaffyP February 2, 2010
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1. Talkin' Trash

2. Something really good or cool, or doing something really cool or good.

3. Kickin' ass!

4. Droppin' Plates
Jarrod Washburn was really "Puttin' the smack down!" in that game tonight!
by Plate Dropper July 24, 2009
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