proto-mullet 

The name given to a haircut that's on it's way to becoming a mullet.

An embryonic mullet.

Jari Litmanen; Tony Knowles circa 1985.

proto-mullet by Gheorghe Hagi April 19, 2003

proto-mullet 

A haircut on its way to attaining full mullet status

Joel had a shaved head 2 months ago, but now he has a proto-mullet.

proto-mullet by Rumsey February 11, 2008

proto-mullet 

The mullet being an intelligent (but simple) life-form, a proto-mullet is a very simple (protean) mullet.

Paul Weller circa 1978
Paul Gray (Eddie & the Hotrods) circa 1977

proto-mullet by Ruggles Rugulatum November 11, 2003