Ha ha! We are just poking a little friendly fun at Germany, which is famous for enjoying a good joke, or as the Germans say, "Sprechnehaltenzoltenfussenmachschnitzerkalbenrollen." Here is just one hilarious example of what we are talking about:
First German: How many Polish people does it take to screw in a light bulb?
Second German: I don't know! How many?
First German: Let's invade Poland and find out!
Millions of Other Germans: Okay!