That is patently untrue. People drink piss in Berlin too, in fact, Berlin is a major tourist destination. Heineken is produced in The Netherlands and widely available and consumed throughout continental Europe. This idea that Europeans won't serve you something they themselves wouldn't consume, or find repugnant is also not true. But it sounds like a cool anecdote to someone who's never been there and knows absolutely nothing about it. If you're gonna tell that lie again, at least use Budweiser, or Coors light. At least that sticks with the theme of uncultured American faux pas, which is what your story was trying to emulate.