When I was a kid I liked to put miscellaneous things into the toilet and watch them get flushed down. Styrofoam was too light and would survive to whirlpool and pop back up. Rocks were too heavy to be pushed by the water. I think the most entertaining was toilet paper still attached to the roll. If you timed it right the toilet would keep pulling fresh paper off the roll as it was sucked down.
Today’s Biff takes a closer look.