Norm's so dumb that he spent 20 minutes looking at the orange juice
can because it said "concentrate."

Norm's so dumb that he thought that he could not use his AM radio in
the evening.

Norm's so dumb that when he went to the airport and saw a sign that
said "Airport Left," he turned around and went home.

Norm's so dumb that he sold his car for gas money.

Norm's so dumb that if he spoke his mind, he'd be speechless.

We need more. Feel free to add to the list............