It's annoying as he**. Some folks put peanut butter on a slice of bread and jam on top of the peanut butter and then top it with another slice of bread. VOILA! PBJ sandwich! Others SWEAR BY putting jam on one slice of bread, peanut butter on the other slice and then slapping the two together. The goal is the same. It's how you get there that differs. So what's the big deal about METHOD? Which method is better? Why do you think so? Or how you put a roll of toilet paper on the toilet paper roll. Over or under? Why does it matter? Does over or under pull more easily? Is over or under more visually pleasing?