Handbone or Hand bone is an old new york slang used by mostly white Staten Islanders (mostly italians and irish) to describe black/African-American men. The origin of this slur is unknown.
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."