26. Try on Pants Without a Fitting Room

For those of you daredevils too lazy to wait in line for fitting rooms, there's another way to gauge whether you'll fit into a pair of jeans or pants. Place your fist and elbow into the waistband of your pants. That distance is roughly the size of your waist, so if you can squeeze your fist and elbow into them, you'll probably fit into those bad boys just fine.