Some Germans show strange habits when arguing with people that are not so fluent in German. Eating in a small Turkish restaurant half an hour ago I witnessed such a prime time German.
After ordering some Turkish food he was not satisfied with the taste of the dish and asked for Maggi, the legendary but nevertheless disgusting German spicy sauce. Instead of asking and waiting for an answer he went "Haben Sie Maggi Maggi?" while shaking his hand as if he had a bottle of it already in hand. The poor Turkish dude didn´t have a clue but was confronted with more rigid exercises of "Maggi Maggi, haben Sie Maggi Maggi hier?". All in all I must have heard "Maggi Maggi" around ten times in a row. The Turkish waiter does speak German, so he politely asked what Maggi is. But instead of an answer he heard the "Maggi Maggi" staccato once again.
So remember, if a foreigner does not understand your German phrase while being abroad or while you´re talking to people of different tongues, keep repeating it until the end of time! They might get the meaning sooner or later. Or realize you´re a dickhead.