Ha, now I see. It's all clear to me now. You have heard all those theories about Hitler not dying in WW 2 but escaping and being still alive?
Well
You have said you can speak German.
You have said you haven't spoken German for some years. Most likely because you had to escape from Germany.
Also, you told at some point, some german tourists have been surprised when you have spoken German to them in Finland.
Why would they be surprised unless.. you are actually Hitler.
You have been exposed!