look up any word, like blumpkin:
 
1.
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
 
2.
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
 
3.
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
 
4.
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
 
5.
a jewish boy or girl,preferibly boy, who has big yomega
the jew ran down the street yelling "i'm a smacky and i'm proud"
by Ura nus November 16, 2003