To be clear: it wasn't a big deal, I just shrugged and (bravely) survived.
I tried to buy a carrot. It came from a loose produce shelf. Last one which I thought was a bit odd. I didn't bother weighing it myself because there was a queue at the scales. Went to pay expecting the cashier to weigh it. She moaned a bit about me not putting a label on it and moaned even more when I said I didn't need a bag for it. She was obviously new as she didn't know how to put it through the till so she called a manager over. The manager said something I didn't hear and went off to the veg section. He came back and said because there wasn't a label on the carrot shelf he couldn't sell me it?
I've had it before when a shop has refused to sell me a cucumber because it was prepacked but the label had come off. I sort of see why with that (although it's stupid) but why with a lose carrot?
By the way I am over 18 and have no previous veg related offences.