It's an admittedly obscure reference to a cheating technique used in the Star Wars card game sabacc, which allows a player to surreptitiously switch out a card. I’m pretty sure I picked it up from one of Timothy Zahn's Thrawn books when I was a kid.
But I didn't know it had a meaning in Norwegian, so I guess TIL!
I'm curious, does the word have a further meaning in the context of cheating at cards?