There is Only One Place It Should Go

To replace a roll of toilet paper with another one takes about a minute, at most.
However, it’s always amazes me to see how many different
places people put it other than where it should be.

   
None! On the Countertop On the toilet

  
On the Floor On Top

Toilet paper should be put properly on the holder
(which should be completely assembled).
It’s the same time difference, but location matters on this one.
Under or over is your option.