Top definition
One who is overly self-righteous about their dietary lifestyle. Who in any given situation will make you feel very guilty for your own choices.
Jane: "oh you are eating another hamburger? Wow, that's like your third this week."
John: "And?"
Jane: "I just wish you would be more healthy, you know like me. That way you won't die an early death."
John: "you are such a Pretentatarian..."
by PittySwag June 15, 2014
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