Since getting pregnant I have noticed a little pain in my belly button. I HATE anything touching it so I keep my finger out of it. I finally reached in and felt this little sharp thing. I have a deep innie so I laid down and took a pic and zoomed in. I saw what looked like a clump of hair. Finally pulled out some tweezers (so hard for me to tolerate) and pulled it out painlessly. It was like 50-60 short sharp hairs in a clump. Some light, some dark. So nasty! I am guessing just things that have been caught in there and haven't washed out? I have two dogs. But ew! Clean your belly buttons! I will be paying more attention to it now! Before and after.