Q: What's mullet they are saying in this video? https://www.youtube.com/watch?v=hGc-ZawSoyE&t=944s
I found the meaning of 'mullet' in dictionary and it's a fish..?
Does it mean a real fish what they are saying in this video about Ezra's hair ..?

A: Ezra is trying to describe his haircut.
As the guy in the baseball cap says:

I know for a fact that growing the back out..., it's mullet style


(source: machohairstyles.com)
but this is Ezra in the movie Fantastic Beasts and Where To Find Them

with the mushroom cap he mentioned.
