I'm kind of a freak when it comes to this. In my view, toilet paper
must come over the roll. In fact, when I go to my mom's house (where she throws it on any old way), I will actually turn the roll around if it's on "wrong." Oddly enough, though, we had a maid service come in before Thanksgiving to do a major house cleaning. And after they left, I noticed that they turned every roll of TP in all of the bathrooms to roll under.

Susan