1. A person who stands against animal exploitation and animal murder and doesn't support them or consumes what provides from them - meat, dairy, eggs, honey, fur, leather, etc.

2. That is not containing animal products or products tested on animals.

Someone who, for reasons of personal principle, follows a strict vegetarian diet and boycotts wool, silk, leather, and sometimes zoos. Does not require one to be affluent, to humble-brag, or to be contemptuous of and faux-horrified at everyone who's not a vegan; is nonetheless correlated with all of the above.

someone who stuffs chick peas up their arse

A vegan is someone who will definitely be hated on by non vegans or non vegetarians because they can't have the heart to be them. A true vegan or vegetarian will never want to hurt any creature. They are very loyal people, and will even die for an animal.

A Mental Illness

Vegans are usually described as sub-humans, who think that eating/using animal products should be forbidden.

An angry white woman with very little common sense, usually called Ms Kadie.
Or someone refraining from consuming animal products and animal byproducts.

Something basic bitches claim to be