If you live in Britain and you have access to a Tesco, go to the bakery section and pick up a "Jumbo Croissant". These are a new thing they've started doing. Go to the self-service counter and press the "Other Bakery Products etc." button, then press C, then press Plain Croissant. They've just launched the jumbo croissants so they haven't updated the self-service databases. A small thing, but it saves you 45p and the staff can't accuse you of anything because you're not able to pay for what you owe them. Worked for me twice today like a charm and even if it's not that much of a scam, it means you can get the equivalent of two pastries for the price of one. Hope this helped