I get it, that’s not uncommon. I’m always honest and say metal, but if I’m feelin a little crabby I’ll just leave it to whatever they think metal is.
“Metal, like HURRRRR?” “Yep.”
If they seem interested or cool about it I’ll elaborate, maybe give some examples. And I know that metal doesn’t have to be the HURRRRRRR stuff but that’s exactly what I like :D