The result of aging, mullet creep occurs in (mainly Southern, semi-rural) men as their hairline recedes in front, but the mullet continues to grow longer in the back, giving the appearance of the entire mullet creeping backwards on the skull. Often accompanied by graying, and a Trans-Am succumbing to disrepair on the mullett creepee's front lawn.
Jethro's biz-in-front / party-in-back hairdo looked great when he was in his 20's, but now, with the mullet creep, he looks like Riff Raff from Rocky Horror.
by Sidiferu January 2, 2012
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