Lost and Fou---WTF IS THAT

The other day at work there was this thing laying on the ground and I walked over to pick it up and throw it away because I hate litter. When I got to this object I stopped dead in my tracks. The little Hispanic lady standing next to this thing was staring down at it. We stared quietly at this object for a few seconds, then simultaneously looked at each other and were like, "¿¡Que es eso?!" I asked her where it came from; she said she didn't know, that she just saw it laying there on the floor. I said, "Que cosa mas rara....." then scooped it up in a tray. I stared at it in the tray for a good while, longer than I should have I suppose, but I just had so many questions for this little guy!!!
I wanted to know where it came from. Did this fall out of someone's suitcase or purse? Did this fall out of someone's pocket? Or did this fall off someone's hand? Was this a prosthetic thumb?! What happened to the biological finger this fake finger replaced, was it severed in a heavy machinery accident? Did the wearer take off fakey to sleep at night? Did the wearer have a special dish on their night stand for this little guy? What was the purpose of the red fabric inside? And furthermore, why was this thing never washed?! Oh filthy little angel prosthetic thumb!!! Where have you been in your travels that your owner couldn't once take you in the shower with him?! You poor little fake thumb......

Also, I should mention that this fake thumb was hard as heck. It was not rubbery or squishy but hard and plastic-y. I turned it in to the Lost & Found, just in case the owner came back for his yucky digit.