I was visiting an older relative whose house is terrifyingly spotless - everything is white or cream and beige, everything gleams and there's never a speck of dust anywhere.
We were getting ready to leave and I nipped to the loo in his downstairs toilet which like everywhere else is carpeted in WHITE. I was on my period - one of the early, very heavy days - and as I stood up to wipe and put in a new tampon, a massive clot slid out and went splat onto the white carpet by the toilet!
Obviously I immediately wiped it up with loo roll but there was a very obvious, very red stain left behind. There was no way I could pretend it wasn't me because my relative's partner is post menopause, so after I'd sorted myself out I looked around for something to clean it up with. In MY bathroom there's always some bleach behind the loo and often an old cloth or sponge or something under the sink but oh no! Like most clean freaks, these people apparently liked to pretend that their house becomes gleamingly clean by magic, and keep all cleaning materials out of sight! It wasn't a full bathroom, just a loo with a little basin, and there was nothing. Literally the only products available to me were the liquid hand soap, and loo roll.
So I did my best, but obviously the loo roll was shedding bits and the soap really wasn't up to the challenge, plus I was becoming painfully aware of how long I was spending in there and how dodgy that seemed lol. I finally got it to a point where the stain wasn't red anymore, more of a kind of yellow-y brown which was probably worse 🤢 , mopped it dry as best I could, came out and made a quick 'Oh no, gosh is that the time' type escape, hoping that maybe by the time they noticed it they would blame it on my DC or their grandkids or something! 
But it honestly serves them right for having white carpet in a toilet because why would you do that?