Someone who is
technically a
vegetarian in that they abstain from meat, but who negates all the potential health benefits by eating mostly junk food. Many teenagers fall into this category. It makes being a "vegetarian" really easy, since you still get to eat crap all the time, and still get the cool hippie status that comes with
vegetarianism.
"Hey, I've become a
vegetarian, and
I LOVE IT! I never thought it would be so easy!"
"Wow, I could never live on
whole wheat bread, cabbage soup and beans."
"No, it's easy-potato chips and twinkies have no meat in them!"
"Dude, you're just another junkitarian."