the intentional slurring together of the English words forget + about + it toward the effect of expressing surety, wonder or degree of approval; the usage is largely associated with New York soldiers of the mafia.
The physical space where you forgot why you left one room to go to another room to get whatever it was you wanted, sometimes forcing you to go back to the first room. Maybe several times.
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."