Fixing Dents

A blonde was driving home after a game and got caught in a really bad hailstorm. Her car was covered with dents, so the next day she took it to a repair shop. The shop owner saw that she was a dingy blonde and decided to have some fun, so he told her to go home and blow into the tail pipe really hard, and all the dents would pop out.

So she went home, got down on her hands and knees and started blowing into her tailpipe. Nothing happened. She blew a little harder, and still nothing happened.

Her roommate, another blonde, came home and said, "What are you doing?"

The first blonde told her how the repairman had instructed her to blow into the tailpipe to get all the dents to pop out.

Her blonde roommate rolled her eyes and said, "Uh, like hello! You need to roll up the windows first!"