Top definition
A person habitually addicted to heroin (Smack).
"Man that smacky looks like the walking dead."
"Smacky's ruin the drug game and give it a bad name."
by Diego August 17, 2003
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Aug 11 Word of the Day
A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.
"My boyfriend has a total case of brain worms. He told me the cat was bugged so the Feds could listen in on us having sex..."

or

"You totally stumbled over that entire sentence. Can't speak English all of a sudden? What, do you have brain worms?"
by _Jez_ October 03, 2009
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2
A slang term for the ever so popular McDonalds fast food corporation.
Steve: Yo, im feenin for a double cheeseburger, medium fry, and a medium doc. pepper. where could i possibly find this delicious combination.

Diesel: Oh, you stupid shit, go to Smackies!

Zach: I dont even know where i am right now!
by DieselleseiD May 03, 2008
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3
sometimes used to convey that a drug mixture is adulterated with heroin or another drug which the user may feel is acting like heroin may act
I feel sick, I think I got some smacky rolls!
by _GoD_ September 20, 2004
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5
To Smacky is to slap your cock around with the aim of creating self-pleasure, but you do it because you're angry at your penis for being gay.
1. He got a boner from watching Christian Bale undress, so he began to smacky his dick immediately.

2. "Dude, I found out I was gay last night, so I smackied my chode for hours."
by TRONICUS August 17, 2009
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