I was raised to Let Nothing Go To Waste.
I have little patience for those who, for example like a food until they learn what it is.
I have perhaps been foolish, but when, back in the dorm, the wonderful fudge left by the roommate developed hairy blue growths, I reasoned that whatever spores caused that were probably there the day before, and I enjoyed it then, so I rinsed it off and ate it. No ill effects, and it was delicious.
Well, the other day, preparing for bed, I went into the bathroom, and I heard a "scrape-tap-tap-tapppp" noise. Looking around for the source, I discovered that there was a fairly large centipede (more than 3" long, leg-span more than 2.5"?) in the cup that I put my tooth brush in. (The barrel is too large to fit into the cup thingy.) He was having trouble getting out -- the plastic was just too smooth for him.
I removed the toothbrush to deal with later. Took the cup downstairs, and chucked the critter out on the front porch. At least I think I did. He was in the cup as I exited the house, but I didn't see him hit the ground.
Back inside I had a decision to make. Do I use the same toothbrush I've been using, or do I grab an as-yet-unused toothbrush provided by my dentist...