Ghetto youth who make their money by robbing, or "jacking", random people on the streets, using some type of pistol or handheld firearm. Coming from the process of holding somewhat at gunpoint, or "sticking them up".
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."