Slack 

An adjective that describes any orifice that has seen copious amounts of penis or similar object (e.g. broom).

Alan: Good Lord! Your bumhole is extraordinarlily slack, I doubt my penis would even touch the sides.

Jill: What can I say, I like penis.

Slack by DaftusCuntus September 27, 2009

Slack 

Being slack is a new way of dogging let's say someone said you could have last beug then they had it, that would be pretty slack

sketch guy 1: oi bruzzy got any spin
sketchy guy 2: nah sorry bro

sketchy guy 2 pulls spin out of his bag

sketchy guy 1: that's just slack as man

Slack by Uncle Andos July 5, 2017

slack 

unfair, out of turn

that was slack man!

slack by Anonymous October 16, 2003

slack 

Lazy

Also try slackist and slackisum

Man am I realy slack

slack by Darken May 24, 2005

Slack 

To not get your dick up; not have a boner.

"She looked down and this cock was totally slack"

Slack by Johnny Luna January 23, 2014

slack 

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

slack by Martin Dean/Chris Shelton May 18, 2004

slack 

simply not meeting the standards

I paid 1.50 for this slack ass lunch.

slack by Ricky Rivers September 15, 2003