the act of making jizz McCum... when you feel the urge to splurge and pop one off, when you do the big M and make Semen A.k.A non-dairy creamer...
Creamer= jizz Non-Dairy= cuz it doesnt taste like milk.. trust me..
To take something small, that doesn't quite qualify as a theft. Probably from the Danish "skæv" or the Dutch "scheef", both of which are pronounced similarly, meaning "askew, or not quite right'. To change an item's ownership without permission, but only something small and of little worth.
"I skeefed an apple off the neighbor's tree." "I skeefed some chips outta your bag when you looked away." "Don't skeef my chair when I go to the bathroom."