"Finestkind" is an all-purpose term for pretty much anything anyone has to say. It's “an expression of the trade.” It can mean anything from “that's cool” to “f--- you.” It is “the Swiss army knife of words.”
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."