One of my favorite things about having international friends (other than the interesting perspectives and cultural exchange, etc., etc., etc.) is the hilarious little quirks of language that emerge in conversation. I will be the first to admit that their English is far better than any foreign language that I speak, and that I have been known to make my own embarrassing comments in both English and other languages.
OK, disclaimers aside, one of the funniest moments from our trip to Zurich happened when we went out to dinner with a group of people, and at the end, a few of them were trying to open little individual bottles of kirsch. The bottles proved to be very difficult to open, and the guys were pulling and pulling at the corks, trying to get them out.
Our German friend finally suggested, "Just wank it! Wank it off!"
(Mostly unrelated note: there is a town in Switzerland called Wankdorf. "Dorf" in Switzerland is the equivalent of "town" in English.)