I have a teeny but very deep belly button. It also folds a bit there after pregnancy and weight loss/gain/loss/gain so occasionally it gets a bit stinky and sore so I spend the next week scrupulously cleaning/drying it and putting in antifungal cream.
It's recently been hurting again and seeping a bit 🤮 so been doing the usual routine. I have just cleaned it and sprayed antifungal fizzing spray into it and it felt a bit funny, I looked down and without any squeezing a 2cm long bullet shaped piece of white gunk shot out and onto the floor.
Bit of googling and dissection later...it was an umbolith...a belly button stone!! Keratin, sebum and hair had made a hard pellet. So stinky, so disgusting...so satisfying!! That it fired out on it's own too!
Anyone else impressed and thoroughly disgusted too. AIBU to share 🤣