Okay, not to offend any blondes - my best buddy is one, but some of these are funny:

She was Sooooo Blonde:

She thought a quarterback was a refund.
She thought General Motors was in the army.
She thought Meow Mix was a CD for cats.
She thought Boys II Men was a day care center.
At the bottom of an application where it says "Sign here:" she wrote "Sagittarius".

She was Sooooooo Blonde. . .

She took the ruler to bed to see how long she slept.
She sent a fax with a stamp on it.
She tripped over a cordless phone.
She spent 20 minutes looking at the orange juice can because it said "Concentrate".
She tried to put M&Ms in alphabetical order.

She was Soooooooooooo Blonde. . .

She studied for a blood test.
When she missed bus #44 she took bus #22 twice instead.
She thought she could not use her AM radio in the evening.
She thinks Taco Bell is the Mexican phone company.