1. Someone who cant go one day (or one hour) without drinking a diet coke.

2. Someone who goes to the bathroom frequently as a result of drinking too much diet coke.

3. A person who is skinny because they use diet coke as a way to feel full, instead of eating food.
"You drank that whole pack of diet coke already?! Its only been in the fridge for one day! You are such a diet coke head!"

-She is always running off to the bathroom.
-Yeah shes such a diet coke head.
by caffeinequeen October 23, 2007
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A snobby girl, typically anorexic, clueless, believes the world revolves around her.
Susan are you not eating lunch again, you are turning into such a diet coke head.
by enko February 7, 2005
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A “Diet Coke Head” is a person that identifies as a “Crackhead” but is just a bad person that thinks their funny and “quirky” when really they’re really just a normal person that tries so hard to be different.
Emily is such A Diet Coke Head!”
“I don’t like him, he’s a Diet Coke Head.”
by MeanGirl007 June 19, 2020
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