“Why do Americans have to refer to their body parts by different names? “
We Americans have always had a taste for euphemisms - What in Sam Hill? tarnation, darn it, dang it, etc, etc.
I was talking about our sex organs. It's a throwback to the Puritans where any reference to sex was forbidden. It carries on today which is why we have so many afraid to even mention their penis or vagina in any way.