Definition of mullets:
(n) :
A hairstyle where the hair is kept short on the top and sides and long at the back.
(n) :
A fool.
(n) :
(slang) A person who mindlessly follows a fad, a trend, or a leader.
(n) :
A fish of the family Mullidae (order Syngnathiformes), especially the genus Mullus (red mullets or goatfish).
(n) :
(especially US) A fish of the family Mugilidae (order Mugiliformes) (grey mullets).
(n) :
(US) Any of several species of freshwater fish in the sucker family (especially in the genus Moxostoma, redhorses)