Top definition
A thatch of hair cascading out the back of an athlete's helmet, such that the helmet itself seems to have sprouted a mullet.
Sure, the Dolphins' one-and-only "Rasta Running Back" Ricky Williams may lack dedication on the football field. But when it comes to cultivating a first-rate helmullet, he was nearly peerless in his heyday.
by Scott Hess January 20, 2006
Get the mug
Get a helmullet mug for your brother-in-law Georges.