These two Austrians were walking through a wide African desert (do not ask me how they got there – I do not know).

After a while one of them says: Why are we walking through this desert just for this senseless joke. Let us build a bridge!

The other one agrees and they do so (what else?).

When later arriving at the airport the second one says: We idiots! Why did we build a bridge in a desert where there is no water just for the sake of this joke.

Hey, you are right, the other one said, let us go back and remove it again.

On approaching their monument the first one says: Oh, just forget it. We cannot remove this bridge.

Hey, why?, asked the other guy.

Look up, there are two Swiss standing on our bridge trying to catch a fish!