Unproductive tangent: Why do we call it "hallucinationing" instead of "bullshitting" when that is so clearly what it is?

If I'm talking to a guy that says, "I have a really fast metabolism, that's why I can eat whatever I want", he's not hallucinating - he's full of shit.

Avoiding crass language may be one reason.

Just think, one of the hullabaloos of today is because our ancestors were two Victorian to put "sex" on the birth certificate