I read an account of a woman who took a jar full of worms she'd passed in to her GP and he still wouldn't believe they'd come out of her or that she had a parasite problem... Talk about "I'm right no matter what, so don't bother me with the evidence"!
P.S.: Wouldn't be experimenting in this stuff for those so inclined... Best to just observe it from a safe distance, then flush it down repeatedly until clear (and keep Clorox Bleach tab in tank or squirt solution of bleach and water onto porcelain as water's flushing down, making sure nothing sprays you). And while we're on the subject, if you don't already use Bathroom Towelettes, you'll be shocked to see how much more gunk you get off with these than with conventional tissue-paper alone. You don't have to flush them if you're afraid they'll clog up the system; just fold neatly, put in waste bin (lined with old plastic grocery bags), cover with tissue, or whatever...wash hands thoroughly &/or spray with grain alcohol (vodka).