This comical addition to your party wardrobe runs off 4 x AAA batteries, which are discreetly hidden in a little pocket inside the shirt.

With a simple flick of the "on" switch (located on the discreet battery pack), you can go from anonymous punter to "life of the party"...and after a night spent drenching the shirt with sweat, simply remove the battery pack and give it a hand wash.

Then you can put in a new set of batteries and give your fellow party-goers a real show, switch modes from digital clock to stopwatch and see how long it takes for your stingy mate to shout the next round.

Up for a bit of mischief? Set the clock an hour ahead (or behind) and jump on a bus or train – then watch your fellow commuters work themselves into a lather as they try to figure out whether daylight savings has started. It also makes a great gift for those among us who suffer from terminal lateness.