Red and blue text, red and blue illustration of electric fan blowing on chicken. White background.
This button is a play on words. The picture on the button illustrates the literal meaning of "cool chick" -- a hen in low temperature, whereas the expression is generally used to describe a fair, and perhaps laid-back, young woman.
"Chick" as a colloquial term for "young woman" it is first recorded 1927, supposedly originated from U.S. African American dialect. In British use in this sense was documented circa 1940; the term was popularized by Beatniks in late 1950s.