the way I do it is...i take a single sheet of TP and tear a hole out of the
center (saving the small piece for later) then insert my index finger into the
hole of the TP sliding it down to my knuckle then proceed to cleaning the
event horizon, when finished i will grasp the sheet of TP from the backside
pulling off and removing all waste from the finger.
Remember the small piece...i take that and get under my finger nail cuz i bite my nails all the time.
right handed of course.