Infinities: The toilet paper just keeps piling up until it's out of frame. It probably ends somewhere, but nowhere we can measure.

Alternately, the toilet paper it tightly wedged in the little hole and no more could be accommodated.

Subnormals: There's less than one square left, but there is still toilet paper.

-0: The glue marks on the empty tube are pointing the other way. This shouldn't matter, but is apparently enough to confuse some toilet users.