Not bad
The animation and such was smooth, and the idea was funny, but here is the criticism.
Graphics: Decent, could have been highly improved. Why don't your graphics look amazing like the many other authors on Newgrounds, your graphics should be awesome. Crappy graphics like this, are used for crappy short jokes.
Time: You obviously didn't spent too long on this movie, and the joke really wasn't strong enough for this 15 second movie. Half the movie was toilet paper shown at different angles.
Sound: The voice-overs could have been majorly improved. The quality of the voices were horrid.
Overall: Poop jokes = not funny
GOOD TRY!