To 'Schleipman' is someone completely unaware of there actions who shake the urine out of one's penis so violently at a open urinal that everyone else in the mens room gets very uncomfortable, avoids eye contact and believes the offender is committing public masterbation.
"Hey man, Did you see Sir Spanks a Lot having a jack attack while we were washing our hands? "
"Dude. Whoa, That Cock Knocker' pulled a Schleipman and it scared the bejesus out of me!
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."