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15.
1. To kiss.
2. To chew gum LOUDLY.
3. To lick your lips after eating something sweet.
1. I love it when he smacks my lips.
2. She sits at her desk smacking her gum and bored outta her mind.
3. She tastes lip-smacking good.
by mamalonglegs December 14, 2011
14 17
 
1.
Heroin. Most frequently used in the 60s.
When the smack begins to flow, I really don't care anymore...
by Lurhstaap December 28, 2003
2295 324
 
2.
gossip, talkin shit about one another,
That girls talkin smack about everyone!
by liv March 20, 2005
890 491
 
3.
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
1014 646
 
4.
Heroin.

Also known as Dragon, Dope, Heron, Herone, Hero, Hera, H, Big H, White, China White, White Nurse, White Lady, White Horse, White Girl, White Boy, White Stuff, Boy, He, Black, Black Tar, Black Pearl, Black Stuff, Black Eagle, Brown, Brown Crystal, Brown Sugar, Brown Tape, Brown Rhine, Chiba, Chiva, Chieva, Mexican Brown, Mexican Mud, Mexican Horse, Junk, Tar, Snow, Snowball, Scag, Scat, Sack, Skunk, Number 3, Number 4, Number 8, Bombita, Brea, Blanco, Bonita, Caballo, Calbo, Carga, Carne, Chapopote, Chatarra, Chicle, Cocofan, Gato, Heroina, La Buena, La Chiva, Polvo, Tecata, Tigre, Tigre Blanco, Tigre del Norte, Vidrio and Zoquete.
Snuffaluffagus: "I'm sick, Bird. I need some smack, Bird."

- Dave Chappelle
by ROCKintheCDA November 06, 2010
201 85
 
5.
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
441 332
 
6.
To hit, usually with one's hand
Roger: I'm going to smack you in the face!
by gbiche April 22, 2006
362 270
 
7.
Slang term for Ecstasy.
Hey man, you got any smacks?
by freelovehippy August 07, 2008
79 44