jack slack 

Very HOT. The best guy you will ever meet.

Jack Slack is very HOT

jack slack by Hot guy. March 13, 2019

jack the slack 

To masturbate, aka to jack off, jerk off, burp the worm

Will Jack jack the slack tonight?

jack the slack by EpicEric26 January 19, 2018

Slack-Jack 

A complete and utterly terrible handjob. One that is simply not worth the time and honestly makes one wonder what the fuck is wrong with with the human being who's head is in your lap.

Brady came back Jones' house and told everyone that Liz gave him the Slack-Jack of the century and he'd rather stick his dick in a pinecone than experience that again.

Slack-Jack by SpamoniJones April 6, 2010

Jack it and slack it

The action of “jacking it” (beating the absolute fuck out of your dick) and then “slacking it “ (lying around and not doing anything

Me: When I get home I finna jack it and slack it

Random nigga: vro same that’s like all I’ve been doing lately
Me: wait who tf are you

Jack it and slack it by Inatehiggers May 27, 2018

Slack-a-lack-jack 

Slack-a-lack-jack

Means, roughly, "Please endeavor to give me the personal space that i desire while i'm buying, selling, distribting, or using crack cocaine." Old Phoenix (AZ) slang.

Be slack-a-lack-jack, ga'my pipe, ga'my crack!

Slack-a-lack-jack by East Bay Vinny November 16, 2004

Get the slack out of your jack

Term used to tell someone to quit lollygagging. Can be used to tell someone they are to laid back.

He's been lookin' at magazines for 20 minutes! Our plane leaves in 15. Go tell him get the slack out of your jack!

Get the slack out of your jack by Phrisbeephreak July 14, 2010

Cut me some slack, Jack 

This is jive talking, and you shout out this when one of your homies busts a better move than you

"Yo man CUT ME SOME SLACK JACK that move was off the hook!

Cut me some slack, Jack by BILLY BILO August 29, 2005