A point during foreplay, specifically cunnelingus, when you decide to bite the clitoris hard. Very common in people who are not experienced in the act of performing regular cunnelingus.
I started hooking up with this chick last night, but the foreplay took a nasty turn when I performed cannibalingus, and hurt her vagina.
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."