Yesterday I was walking and I happened upon an older gentleman taking a stroll. He looked very pensive and was holding a newspaper behind his back, slowly moving to-and-fro, stopping to pick up a penny, etc.
Anyway, this gentleman had a pants problem: his left pant leg was tucked into his sock. This is a much more common problem than people realize, so I always advise all my patients to check their pants every 30 minutes or so. Indeed, many pant problems are easily spotted and can be prevented or treated with frequent and thorough examinations.