I used to drive, daily, past a Pick Your Own farm. They had a nice large sign headed PYO and beneath the PYO a number of hooks from which they would have a variety of small boards detailing whatever produce was available. "Strawberries" "Blackcurrants" "Runner Beans" etc. These obviously changed with the seasons. At the bottom of their sign were the words, in bright red, "JUST DRIVE IN"
Passing the farm one evening on that way home I noted that a new and previously unseen product was available and the sign now read:
PYO
HORSE MANURE
JUST DRIVE IN
Laughed so hard nearly went into the car in front ~ the driver of which had also started to laugh. I suspect we both had the mental image of picking over the lumps of manure to select the best.