Fidwitch 

A British slang term that came to prominence in the online game fortnite

Oh bloody fidwitch, I lost again.

Fidwitch by Oragif July 8, 2020

FitWitch 

A girl who stalks other girls via tracking devices and then bullies them if they are not getting enough exercise. The FitWitch is watching you and will call you out and use your own guilt against you if you don't get in your daily steps

That Caroline has been spying on me via my fitbit, she's such a FitWitch.

FitWitch by laur3ntini December 7, 2021