A phrase used by incels appropriating Jamaican culture to express dislike, usually in a homophobic or transphobic context
Alternate spellings include fiyah and fyah, among others.
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!