The untanned characteristic of men's upper legs from having worn longer shorts and trunks while in the presence of the beneficial rays of the sun. It does not usually occur in women or non-Americans, whose beach attire is usually quite brief.
When he sat down, Joey's shorts revealed a major case of guy-thigh.
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."