jack in the kacks 

a person who takes delight in sniggering while masturbating themselves without anyones knowledge and the removal of their trousers

Stevie D enjoys a jack in the kacks during free class in the top study

jack in the kacks by aybsteve May 5, 2005

jack in the kacks 

someone who enjoys fondling their privates (preferably under tables) without the removing of ones trousers

"Here G man stevie D is having another jack in his kacks"

jack in the kacks by Ramboisawab May 5, 2005