The most logically-challenged portion of the general population for which
the most obvious warnings, posts, signs and instructions must be written or designed to avoid
catastrophe.
On the lid of the coffee cup: Contents may be
hot.
On a package of kitchen knives: Caution! Items are sharp.
On a trash
bag: Do not place over head.
At a railroad crossing: No parking.
On a clothes dryer: Do not place children or animals inside.
"This is the dumbest sign I've ever seen. Do they think I'm a complete
moron?"
"Dude. Gotta plan for the Dumbest Common Denominator."