Well these 2 are true, not myths because…I was that driver. 
Pulled the disc while loading because the resto for the night was opposite. It turned out to be closed so I drove sans disc for 15 kms to another, got fed and parked up.
Next day the ministry man studied the discs carefully, pointed out the missing zig zags and asked ‘looking for a restaurant?’ No use denying so said yes. Answer, ‘ok, carry on’. 
Driving in Italy with the girl friend in the passenger seat. Had forgotten in the rush picking up the trailer in Dover to put my plate on it.
2 Carabinieris stopped me, demanded I put the plate on immediately. While walking to the back with the first officer, the 2nd one, who had been eyeing the dumplings boiling over from the GF’s low top as she leant across the driver’s seat to plead with him for directions to a ristorante because she was starving, called me back urgently. I was not allowed to put the plate on as the directions he was giving to the resto were far more urgent.
With the French it’s food, with the Italians it’s women.