This was invented by a freind of mine to reflect the type of thing another freind of mine, max, who thinks he is Jamaican, might say instead of safe.
It stems from when max met a UK MC called Demon, and is designed to illustrate what max might of said to try and impress him with his Jamaicaness (By sticking ting on the end of safe makes it sound more jamaican).
Since then it has caught on and is now widely used in the Hertfordshire area of UK.
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."