Being a Finkadink is much like being a dumb rat.(rat fink) If somebody is a Finkadink he or she is ratting on her friends very dumb-like. i.e. you are talking to the person you are ratting too while the person you are ratting on can hear you in the other room.
Did you hear how the mafia found out Jim? He was being a real Finkadink
A small piece of information. Derived from the word ken, used often in the scottish language and is synonymous with knowledge.
Person 1: "Hey I don't get this shit. How do you solve this problem?"
Person 2: "I got that one. Give me some kenlets on this assignment and I'll help you w/ that one."