When folks are calling others slurs and insults based on sexuality, there is still a lot of taboo around it. If it isn't bad to be part of the LGBT community, it is harder to use any of the words describing folks like me as insults. It is in the same strand as using nationality or skin color references as insults: If it isn't a bad thing, you won't use the insult. Of course, you could be ignorant - especially at a young age, but that also means no one has bothered to explain what it means nor encouraged to be inclusive. They definitely weren't talking about the word "fuck" in any of its forms.

Ah, yeah I was thinking of a different f word.

Possibly referring to a different f word than you might be thinking of. Eg I assumed it wasn't fuck.