Heroin. Most frequently used in the 60s.
When the smack begins to flow, I really don't care anymore...
by Lurhstaap December 29, 2004
usually used while eating some good ass food
by k money bitch June 13, 2017
smack is:
a) heroin
b) to slap a bitch in a rude way
c) the noodles (smack ramen)
d) vagina, you dip shit
a) dude i need to stop using the smack.
b) i smacked that bitch.
c) i ate all your smack
d) i fucked her and she had a tight ass smack.
by b790790d March 25, 2005
disrespectful comments made toward or about someone

all through the interview, all he did was talk smack about A-Rod...not cool!

"don't lay any of your smack on ME, flip!"
by ColdOne November 14, 2005
to spit game at a joint or to hit on a girl. to flirt with a girl and try and get her number
by kING bREEZY August 18, 2008
Soldier Minus Aptitude, Coordination, and Knowledge, A Fourth Class Cadet at the United States Air Force Academy.
Quick, find the SMACKS so they can do pushups.
by hawk2100n October 2, 2007