D Harks... one who is lazy and unwilling to work...Harks
get over here you slack! its time for your beating.
by son of santa April 19, 2003
a ter for girlfriend or sex slave
she's totally my slack man
by Zheai August 06, 2010

Also try slackist and slackisum
Man am I realy slack
by Darken May 22, 2005
A slut, will do anything with partner

see tight
A:i wouldn't sleep with her she'll have all sorts, she lost her virginity 3 years ago man
B:How?! shes only 13!
A:Exactly! shes slack as any-fucking-thing!
by The Bitch Herself! Mwah x May 14, 2005
Australian slang used alot lately showing someone not interested in doing something, or one who is lazy.
Robert: Hey lets go to the shop
Sam: Naa, slack!
by Karina September 09, 2004
To slap someone with one's penis
"Ugh! I can't believe you just slacked me!"
by Superfly June 29, 2004
For a female who has either had too many children or had to many cocks in her at once.
Oh my God check out the size of her slack poon
by Martin Dean/Chris Shelton May 18, 2004

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