slack fuck 

Another term often used to describe zered - referring to lack of enthusiasm for anything more strenuous than getting up late afternoon and spending 10 hours everyday on IRC

I went to bed at 6 am this morning , I got up at 7 pm today .
You are a slack fuck !

slack fuck by Moosipher December 3, 2004

Slack-jawed fool 

N. Something akin to the manner in which you've been howling at the moon.

You've been howlin' at the moon like a slack-jawed fool...

Slack-jawed fool by ryjlars September 3, 2010

slack ma girdle 

slang for "suck my dick"

background information: This term was coined in Charleston, Illinois in the mid nineties by the local physics club at Eastern Illinois University. nobody knows exactly why, but the term is still in widespread use today at EIU.

Monica: Do you want me to collate that for you Mr. President?
Bill: Hey bitch slack ma girdle!

slack ma girdle by Shane and Roy January 3, 2009

slack off 

To masturbate, jack off, stroke your penis, fap, beat your wiener, play with yourself,

My penis was a boner so I slacked off.
slack off.

slack off by Minecraft1238 February 7, 2019

slack and bake 

Similar to that of the wake and bake but for the super stoner who doesn't wake up till noon.

John : Yooo, let's wake and bake tomorrow morning?
Steve: Nahh, I don't wake up till noon my dude, let's slack and bake instead

slack and bake by youlin August 15, 2010

Slack ass 

Combination of 'jackass' and 'slack'

Hop to it slack ass!

Slack ass by ashmadallah February 19, 2015

Slack Attack 

Similar to a heart attack but the victim suffers numbness of the legs and a slowed heart rate and the craving for anything crunchy.

Guys, I think I'm haveing a slack attack!

Slack Attack by Everybodyonce December 10, 2008