A reference from Harry Potter for having the ability to talk to snakes. This reference is used when someone has mastered the art of not just giving a good blowjob, but giving the best blowjob ever!
Man, Becky legitimately gave the best head ever! I don't know how she made my head spin like that, but damn she must've known parseltongue.
Mate, I was in the bush last week and felt a bit horny so grabbed a dead brown snake to do the business and it came alive! I got totally parseltongued!
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."