Raven has pretty much summed it up, but i'd like to add a few more definitions.
The Pescatarian: Generally follows the eating guides of a vegetarian (no meat) with the exception of fish and seafood
The Polotarian: Follows the guidelines of a vegetarian with the exception of chicken.
The Flexitarian: Otherwise known as the 'part time vegetarians' who like to give themselves a label. Generally teenage girls who see vegetarianism as a way of getting attention, yet when they are caught eating meat by actual vegetarians and vegans alike, often claim "todays a break day" or "i still sometimes eat meat". Trust me, you will meet alot and they are both annoying, and frowned upon
The Lacto-Ovo Vegetarian: The 'average' vege who consumes no meat, yet still has dairy (lacto) and eggs (ovo)
The Lacto Vegetarian: No meat and eggs, but still has dairy
The Ovo Vegetarian: No meat and dairy, but still has eggs
Then there is:
The Raw-tarian: who follows a strict, vegan diet, yet insists on 'raw', unprocessed foods that arent cooked.
And the Fruitarian: who holds strong beliefs not to eat anything that ever lived or could have lived. So no meat, dairy, eggs, plants and vegetables. As their name suggests, they only eat fruit, and sometimes some nuts. I've personally never met one.
But finally I present to you:
The Acid-tarian: Drugged up low lifes that are funny to laugh at. Claim that they live on water, air, and acid. I wonder if they photosynthesise ;D
