Any time you feel dumb, don't worry. Check out the following excerpts from a "Wall Street Journal" article by Jim Carlton. Lots of people are dumber than you.
There was this guy at a bar, just looking at his drink. He stays like that for half of an hour.
A man went to the doctor complaining of insomnia.
A married man was having an affair with his secretary. One day, their passions overcame them and they took off for her house, where they made passionate love all afternoon.
One day, at a bus stop there was a girl who was wearing a skintight miniskirt.