Hail Storm Damage

A blonde left her car out in a hail storm.

When the storm was over she checked the car and found out it was
covered with small dents. She went to the local garage and
inquired how to fix the problem. The mechanic told her to blow on
the tailpipe and the dents would be removed. She took the car
home parked it and proceeded to blow on the pipe.

Another blonde came by and inquired what she was doing, she told
her she was blowing on the tailpipe to remove the dents. The
other blonde responded, "that's not going to work unless you roll
up the windows."