Momentum Paper
(n.) - weak one-ply toilet paper that tears off from the initial tug by the user in order to create the necessary momentum to tear off a sufficient amount to wipe one's ass pocket. Usually, the aforementioned user will be a shit pocket themselves, and discard this paper onto the floor of a public restroom for the master of custodial arts to come and clean up.
The plethora of momentum paper on the ground suggests that we're out of shit paper.