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2 definitions by trock

 
1.
jackin is another word for stealing.
Example can be found on Ice Cube's Jackin for beats.
by trock March 07, 2005
 
2.
When you give money to a friend who convinces you that they have a good idea - but they end up totally screwing your over (or fisting you). It turns your investment into an infistment.
Person 1: "Dude, did you invest in Chuck's new business?"

Person 2: "No, man, that is wasn't an investment - it was an infistment"
Person 1: "Infistment?"
Person 2: "Yeah, I haven't felt so taken advantage of since my prostate exam. I will never infist with him again."
by TRock June 27, 2013