BOGOF

I saw an inspired piece of shopping today in Sainsbury's. An old bird behind me bought about 100 packs of Real McCoy crisps. As the spotty checkout boy scanned in the items, the lady said he'd got the price wrong as they were on offer. She then proceeded to give him the piece of plastic which was attached to the shelf, with the Buy One Get One Free (BOGOF) offer written on it.