Zany just means wacky. It's an older word (deriving, I just learned, from commedia dell'arte). I was looking (jokingly) for a euphemism to approximate your impl

Zany just means wacky. It's an older word (deriving, I just learned, from commedia dell'arte). I was looking (jokingly) for a euphemism to approximate your implicit category of this-person-is-either-crazy-or-smoking-something.