i couldn't care less as long as it's there
MW
Obviously over.
How many sheets? Does anyone in the world ever only actually use one individual sheet? I usually just yank the roll, let it spill out a random but decent number of sheets, tear off, fold it such that it increases the surface area compared to a single sheet, to cope with my big arse obviously, then wipe. Its a bit like origami. Bogirami.