A modern hairstyle with more layers on the top of the head than the bottom.

Thick hair makes shaggy hair look like a fashion mullet, which can be easily achieved with (of course) thick hair.
Fact: Shag hair is popular on most fobby (fabulous, as they call it) Asian girls.
by Chi Chopsticks July 11, 2008
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hair usually on, once again, male skaters and is shorter than your shoulders but longer than your ears. extremely popular right now and considered very hot on guys. sometimes straightened with a hair straightener or in other occasions shag hair is never brushed.
A: i wanna skater boyfriend.
B: why?
A: becuase most of them have shag hair.
B: whats shag hair?
A: hot sex in a can on top of a hot guys head.
by Alexa H August 24, 2006
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