There are two main types of people who don't care what anyone thinks, and there are subtypes to both.
People who don't care what other people think
A) People who don't care if anyone thinks they're weird but not necessarily offensive
-1) Liars who claim to not care but really just love attention
-2) Legit people. These are rare.
B) People who don't care who gets offended
-1) People who don't care if they piss off anyone unreasonable
-2) People who don't care if they piss off anyone, regardless of how reasonable they are
My band director is a B2. I realized this today when he made a joke about the tubas sounding "bulemic". I've become relatively sensitive to stuff like this since my sister went into rehab, so after class I told him that I was personally offended because my sister's in rehab. He just said, "Ok, is that all?"
Fuck him.