To turn the blinker off.

What does a blond say when you ask him if the blinker is on?
It’s on. It’s off. It’s on. It’s off. It’s on. It’s off.
What happens when a blond gets Alzheimer’s disease?
His I.Q. goes up!

What did the blond get on his I.Q. test?
Drool.

What do you call a blond golfer with an I.Q. of 125?
A foursome.

What’s five miles long and has an I.Q. of forty?
A blonde parade.