freeway fag
one who tailgates; one who insists on riding the ass - hence the term "fag" - of the vehicle in front of him.  Such behavior arises from the deluded notion that close proximity will cause the other motorist to speed up or pull over, but turns out to be little more than a futile prepubescent grasp at control caused by a pronounced inferiority complex.
"Can you read this bumper sticker?  Then get off my ass, freeway fag!"