I admit it. I'm a fast walker. I have left many a friend (and family) in the dust while on a shopping "mission". I don't mean too, it just happens. So, as you can guess, I really hate getting stuck behind slow walkers!
A guy from Japan has come up with the perfect solution! Check out this video of this guy using a bicycle bell and ringing it behind slow walkers. It works! They start moving off to the side so he can pass!