There’s a patent for toilet paper so there must be an official way to use it. Jenny Che with the dirty details.
According to an 1891 patent by New York businessman Seth Wheeler, the end of a toilet paper roll should be on the outside, or in the “over” position. (Advocates of the “under” position, take note: better flip that roll over when you get home.)
Wheeler described the important details himself.
My invention … consists in a roll of wrapping paper with perforations on the line of the division between one sheet and the next, so as to be easily torn apart, such roll of wrapping paper forming a new article of manufacture
No word on how many plies should be used?