Toilet paper might seem mundane, but upon closer inspection there are far more intricacies than one might imagine. Ever since 1879, the toilet paper roll has been a far more effective method of dispensing sheets than any other form. Of course, the ultimate debate is whether the roll should hang over or under. The ultimate decision is left up to you, but here are some of the benefits and disadvantages of each one.
As it would seem, the vast majority of people utilize the toilet paper that hangs over (coming in at 70%) with organized personality traits. The advantages to this “over” method seem clear compared with having the roll hang “under”. Whichever you choose, this is one of the preferences few people will hold against you.
Source: Original source – Over or Under: The Great Toilet Paper Debate