This is a nickname often used by fans of the Cartoon Network cartoon Steven Universe to refer to a fan-favourite character named Peridot. She is called such because of her yellow-green triangular-shaped hair which resembles the popular crisp Doritos. The author of this entry personally thinks her hair more resembles Bill Cipher.

Peridot is literal, dry, sarcastic, nerdy, has formed a bond with another character in the show named Lapis Lazuli, and once had robot arms that made her look twice her own height.
My Green Space Dorito is slowly shrinking and I fear for my own safety.
by The Pixar Girl October 19, 2019
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