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
by Ruggles Rugulatum November 11, 2003
Top Definition
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.
by Gheorghe Hagi April 19, 2003
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.
by Rumsey February 11, 2008
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