Anyone from South Carolina knows what those large red dots mean. They signify liquor sales. Being from the bible belt, I know these people don’t like to have big signs for their liquor. Which is why this makes a perfect visual Euphemism.
A euphemism is a generally harmless word, name, or phrase that substitutes an offensive or suggestive one.
A little history lesson:
“In the 1940s, the state [South Carolina] was forcing liquor stores to shrink their signs dramatically, so as not to advertise alcohol too blatantly. Stores were allowed to use lettering only a few inches high on doors or windows. A Charleston liquor store “highlighted” the tiny lettering with a dramatic red dot, and everyone else followed suit.”
The State, 01/01/2003, B2. See the SC Vertical File in Local History Room at the Main Library, under the heading “Alcohol.”