O-2

[More smoke exits O-2's mask. She reaches under her mask, and retrieves what she was smoking to speak better.]
The fool walks around town naked. A wise man watches this for many days before stating to the fool. Do you know you are nude? The fool says back "How many fingers do I hold up?" The wise man says three, at which point the fool laughs. I see you are not blind, just stupid! :D