You can’t show them doing their real job. This is a pretty good simulation, though–especially that last test.

I need one. Often my use of a toilet for its ordinary purposes leaves it all choked up. I’m just special that way. For me it would have been good to see it handle some longer … hot dogs.

H/T Hip and Thigh who rightly points out that the plumbing behind this flushing marvel will matter a lot.