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noun: a term used for when an individual is so uninhibited from cannabis that he/she mistakes regular toothpaste (usually a light blue) for purple toothpaste

*this can also apply to the sky

adjective: When you see a person so fucked up that you can tell that they are purple toothpasting
Shit, Jennifer is definitely purple toothpaste right now.
by Jreefer August 08, 2008
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