The Brief: Fye is an abbreviation of the word fire, which means something is really good.

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The term is thought to have originated from the use of the word fire by people with heavy southern accents. Fye and fire are used to describe something dope, for example, “That Tyler the Creator song is straight fye.”
This tweet from rap music festival Rolling Loud uses the word to describe the merch of popular rappers A$AP Rocky and Travis Scott.
Travis and Rocky got some fye
— Rolling Loud (@RollingLoud) October 10, 2019
Here a Twitter user appreciates the fact that Kim Kardashian is always looking like a snack.
idc if she got work done, her face fye https://t.co/uKJVH9wY1Y
— amar! (@marilashai) October 10, 2019