On first inspection, this is an innocent and somewhat ordinary plain white coffee mug. It doesn't feature any pretty patterns or witty inscriptions, to reflect the personality of the drinker...or so it appears! We invite you to look again. This seemingly harmless looking mug offers a great joke to play on unsuspecting victims. When the drinker raises the mug to their lips to take a sip, the hidden: "I'm a twat" printed message on the mug's base will be revealed to all but the tea drinker himself. So, when it's your turn at work to make the teas or coffees (and that may seem like all of the time) you can now choose who to give this little surprise mug to, so that everyone else can have a snigger at their expense.