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A fake type of metalcore that sounds like a baby belching into a kazoo. It's called octanecore because some radio station named Octane thinks it's cool. It's like butt rock, but for people who still believe in the holy trinity of metalcore.
'I can't stand this octanecore garbage, it's like my dog doing a dance party in a garbage can.'
DM: 'Bro, why are you listening to octanecore? You're supposed to be a real metalhead.'
Tweet: 'Octanecore is the musical equivalent of a burnt toast.'