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1.
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
by aybsteve May 05, 2005
 
2.
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"
by Ramboisawab May 05, 2005