A vegetarian, who is not content with others eating meat around him/her. May try to influence there 'traditional' ways with photos of mutilated animals and moan when his/her things are used in conjunction with meat products.
1) "Goddammit, that Katherine is a militant vegetarian"
2) Militant vegetarians should be burned at the stake, over a pile of foot and mouth infested cattle
Raw potatoes, or even better, other root vegetables sliced thin and crunchy.
Regular chips may technically be vegetarian, but this kind of chip is also vegetarian in spirit.
Dude: How's the party?
Bag: I'm doing okay, I brought my wheatgrass juice...do you have any snacks that are MORE vegetarian?
Dude: <picks up raw, unscrubbed potato with sprouted eyes and slices onto plate> Here, have some vegetarian chips.
Bag: Oh thank you!