Originally Posted by Mixtape

Have someone sit on the back when you're driving really fast in the rain with a bottle of shampoo in his hand and a toothbrush. When the spoiler raises up, have them squeeze some shampoo underneath then drink a Red Bull, scrub the shampoo around with the toothbrush in a circular motion. Most likely by this time you've run out of roadway. Turn around, and repeat. On the third pass, have the person on the back (preferably a woman) take their shirt/blouse off and wipe underneath the spoiler until it's dry, still holding the crumpled can of Red Bull in the other hand.

Originally Posted by Ogaleicrum

Boobs are always the solution for everything.

Originally Posted by Overtaker

Put the car on a 2 post lift, accelerate to the speed that engages the spoiler, put it on cruise control, and clean the spoiler. Voila!