As a race, we humans have always wanted to defy gravity, and a lot of good has come off our attempts. Case in point, airplanes, rockets, and hopefully soon spaceships capable of intergalactic travel. Oh, and then there are these gravity-defying coffee cups that stand stable at an unseemly angle. Sadly, they also happen to have a little appendage at the bottom, which connects to the saucer and helps the cups stay upright at those angles. Not so gravity defying now, are they?