Blood talk

Have you noticed that people blame only two ethnicities for certain flaws they have? If they're bad tempered and/or drink a lot, they'd say it's "the Irish" in them. If they're only bad-tempered, it's their "Italian blood".

I never hear anyone saying, "Ah, blame my stubbornness to the German in me" or "I'm not comfortable expressing my feelings because of my British ancestry".