Random question 😂

Didn’t know what group to put this in, but this seems the closest lol

So me and my bf just got done having the stomach bug (I originally thought it was food poisoning till he got sick a couple days later). But now that we both aren’t sick, I was disinfecting our bathroom. When I got the toilet I noticed something I’ve never seen before!

There is a faint blue butt shaped tint on our toilet seat 😂 what is this and whyyyy?!? It’s bugging me because it doesn’t look clean even though I scrubbed it over and over again and the blue is still there!