One who pretends to be vegetarian, but is in fact not; A fake vegetarian; One who claims to adhere to the vegetarian ethos when in certain company, but consumes animal products and meat otherwise.
Jose: I saw Lauren at Fuji Mountain last night-- but she was eating chicken teriyaki. Isn't she vegetarian?
Christie: That's what she tells everyone, but she's a total faketarian.
Met a lady at the store today looking for worm medication for her kittens. Couldn't stop laughing as she spewed off that the "fucking" store was out of the "fucking" dewormer and how she'd "fucking" have to go to "fucking" Walmart because no "fucking" store around here "fucking " carries what the "fuck" she's "fucking" looking for. Awesome day meeting a fellow fuckatarian!