Sorry to break this to you, but global warming is your fault. In fact it's everyone's fault. Unless of course you're one of those sanctimonious celebs whose carbon footprint is non-existent because you lead a ridiculously green lifestyle. That is when you're not jetting around the globe filling your coffers with wads of cash made from a few thousand acres of pulped rainforest.

We digress. The point is global warming is a reality we all have to face up to. But why wait twenty years to witness its devastating effects when you can watch them right now with the ingenious Global Warming Mug?

This worryingly relevant mug-with-a-message is adorned with a map of the world. Which is nice. What isn't particularly nice is what happens when you fill the mug with a hot drink. Because as soon as the mug feels the heat, the land mass begins to disappear before your very eyes. Oceans start to spread across the coastlines as ice caps melt and water levels rise. Crikey!

Don't be surprised if you're soon dribbling your tea in morbid fascination as you watch Florida being engulfed by the Atlantic and witness Central America dissolving into a few small islands. It's enough to ruin your appetite...almost!

If the Global Warming Mug doesn't shake you into action, nothing will. It really is the ideal cautionary gift for eco-unfriendly tea/coffee drinkers everywhere - and we're sure you know plenty: maybe they drive a car, maybe they're frequent flyers, maybe they use electrical appliances…hang on, that's pretty much everyone, isn't it? So unless you use renewable energy, cycle to work, recycle at home and spend your spare time planting trees, you'd better get ordering before our entire shipment melts away. It's the end of the world as we know it! Pass the biscotti.