veggiehead 

A person who looks really slim/thin due to the fact that he/she is vegetarian, thus eats no meat. Such a person has a really hard time gaining weight.

My friend is a veggiehead, he can never gain weight no matter how much food he eats.

veggiehead by DarkGuju November 7, 2009

vegghead 

VEGETARIAN

i have to eat fish so i can get the protien i need cuz i'm a VEGGHEAD.

vegghead by AnisaDaisy October 17, 2008