Back in high school I had a '70 RoadRunner, which had, (as was all the rage in the day) a Craig super tuner II strapped under the dash and no radio where the radio was supposed to be. At the time in New Jersey, we used to get the vehicles inspected at a state run, drive through, DMV inspection station (very cheerful people BTW) Well, on this particular car, the winshield wipers didn't work, which were required.
Fast foward to me behind the wheel and the inspector giving instructions: left blinker, right blinker, horn, step on the brake etc. When he tells me to put on the wipers, I reach through the hole in the dash, grab the linkage and start moving my arm back and forth, making the wiper blades do this less than rythmic dance on the dry winshield. The guy looks through the window and says "What the hell are you doing ?" Um, you said wipers. He was not amused.