My old university prof used to say: "How many Germans do you need to change a lightbulb? One, because we are efficient and don't have time for humor." (German u

My old university prof used to say: "How many Germans do you need to change a lightbulb? One, because we are efficient and don't have time for humor." (German university + German prof) Yeah, the Austrians are saying that, but here in Germany we say the same about them.