Traditional hairpiece worn by women to keep their hair out of their face. Common characteristics of a don't-touch-me-scrunchie are when it's worn; ridiculously tight pulled back hair, a pissed-off look on the womans face and a walk that would plow anybody over if they got in her way.
Chris- "I saw your ex walking out of the bank the other day."
John- "Oh yeah? How did she look??"
Chris- "She was wearing sunglasses, an angry look on her face and her hair was pulled back really tight in a don't-touch-me-scrunchie."