Horn OK Please

— ‘Awaaz Do’ […] is another way of expressing the single most phrase painted on the backs of lorries, ‘Horn OK please’ At first I thought I got the gist: please horn, OK? For the enormous trucks that rarely made use of their rear-view mirrors, it was essential to let them know of your desire to pass. However, I did find myself pondering, especially after several hours of chevron hypnosis, that there may be more than one way of viewing this curious assemblage of words. Was ‘horn’ a command or simple noun in this case? How to interpret the combination of the collaborative ‘OK’ with the supplicatory ‘please’? The more I thought about it, the less sense the phrase made and the more the three words appeared to have accidentally collided with one another to make a vaguely baffling bumper sticker.