What to do when you are being tailgated?

The first chance you get slow down and allow the car to pass you. first i turn my windshield washer on and hold it till he gets the hint.he will be soaked with your excess fluid.but i am a ball breaker,if you think he has a screw loose, get out of the way safly take his plate,model,color and report him as a aggressive,road rage driver that is swaying on the highway.troopers will have a ball with him,and chances are there are plenty of violations on his record anyway,especially if you have your family in the car, you have to think of their safety and drop the macho crap