Can't be bothered hemming?

Try the Wilton method, or "denim spats" method, of shortening jeans. This method has now been observed on a middle-aged woman at the State Theater, so it may be a lot more common than I thought.

All you need is a pair of scissors. Figure out how much of your jeans are trailing under your feet, and then cut the back of the hem off at ground level. Do not cut the front of the hem off, thus preserving part of the original hem and the appearance of professional hemming.