1. One's level of sexual looseness or skill.
'im one to b' proud of 'is slackness. 'e 'as all dem women. Di ooman dem wanna stamina daddy, ya hear. One wit all day slackness is one 'at stepper
by Tim May 25, 2006
1 more definition
unwaranted perverse behavior
Sanjay's behavior at the bar was pure and utter slackness.
by childofleroy September 11, 2003