slack

To slap someone with one's penis

"Ugh! I can't believe you just slacked me!"

by Superfly June 29, 2004

slack

one a dollar (chi town)

"Ay folk let me get a slack up out you.

by Yung nizzle June 29, 2003

Slack

This is a nickname that uses reverse psychology on the classic word "Slacker" -as in to be lazy.
"Slack" is the most AWESOME word you can use to describe a person and has been developed to change expectation by subterfuge.

Dude! You are soooo Slack!!!!!!!!

by James Russell November 23, 2004

Slack

An adjective much like chill, showing approval, contentment, or mild amusement.

Friday night was slack.
Oh man, that shot was slack!

by Fuck you October 26, 2004

Slack

For a SubGenius, Slack can be anything you get or enjoy out of life that you don't have to work for or pay for , an approach where one stops trying to make things happen or exert control, and instead simply "allows" or "lets" favorable events to occur. Everyone is born with Original Slack, an ideosyncratic harmony with the flow of life which the unwitting Conspiracy of Normality is unceasingly trying to trick us into giving up, often as a Con-job in exchange for False Slack (anything you're sold or conned into that you have to work for or pay for, or the obligation of working or paying for it).

I just had a the most Slack-filled (week/day/hour) -- everything just fell into place and "accidentally" went my way, and I didn't have to lift a finger or pay even one red cent to make it happen that way. Hell, I even found a $20 bill, so I'm money ahead! Talk about SLACK...

by Monseignore Laszlo, SubGothius May 7, 2004

Slacking

1. To not work for long periods of time.

i've beeen slacking all day

by Snake March 20, 2005

Slack

Meaning to prefer to that's disgusting and disturbing

"You slack asf for dating Bethany"
"Aye, I saw yo slack ass sister at the store"
"Yo slack ass just ate that chip up off of the floor"

by datgalmeagann January 25, 2020