"Slatna roulette" is a is a involuntarily lethal game of chance in which a player enters city of Rogaška Slatina and has a risk of getting his ass beat.
Or not.
You never know.
Or do you?
John: "Stan, how was you vacation in Rogaška?"
Stan: "Great. Although I was constantly nervous since I came into the city."
John: "How come?"
Stan: "I don't know. Somehow I had a feeling that everyone wants to kick my ass, although they were smiling to me a lot."
John: "Oh. Tourist agency didn't inform you, right?"
Stan: "Inform me what?"
John: "I believe you got away nicely. You participated in a game of Slatna roulette."