An individual who has poor hygiene in regards to their teeth, which causes their teeth to become a light brown color, resembling peanut butter.
Person 1: Hey, did you get with that girl last night?
Person 2: Nah, I told her to take a hike. She had peanut butter teeth.
Person 2: Nah, I told her to take a hike. She had peanut butter teeth.
by Mr. NewVegas January 20, 2017
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