|1.||dumb as Charlie Sheen|
Stupid, dull-witted. The complete absence of rational thought or any potential for rational thought. The lowest possible level on the intelligence scale. A fucktard.
Student: Professor, this formaldehyde soaked frog I'm dissecting is dumber than Charlie Sheen.
Professor: Son, the correct expression is 'Dumb as Charlie Sheen' . It's not possible to be dumber than Charlie Sheen.