Is it wrong that I I visited germany last week and became very aroused?
Is that because you find German women particularly attractive?
Perhaps... But german girls can be so pretentious
Well, I hope you managed to keep your response to yourself.  It's frowned upon to go showing off your arousal in public.  People might complain.
Why should I hold back? I want people to know I'm turned on.
Showing others your level of arousal is inappropriate and will make you appear to be a creep. This can also get you arrested so it's best to avoid this behavior altogether.