I know for a fact that at least one person in this world has before now pulled 20 sheets off the roll, screwed it into a ball and used it to dab up a drop of wee that probably amounts to 0.3ml. Ostensibly that is too much paper for the job at hand.
I also know for a fact that another person in this world winds at least 10 sheets around their hand, per wipe and they get through a roll in approximately 4 sessions (two days). Again, that's too much paper per wipe.