A person who is so adept at sex or blowjobs, the recipient of their talents contracts temporary amnesia. Therefore providing the illusion of their sperm being stolen.
"Dude, this girl gave me the most insane blowjob last night. I passed out and couldn't remember my name, she's a total spermburglar."
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."