Nobody talks about it

Well I'm 40 something and some crazy stuff happens all the time and nobody ever talks about it. The other day I was running my hand down my side and I felt something strange. I picked my left noon up in my right hand and twisted my neck awkwardly to look at me side. About halfway between my armpit and my hip what do I find? A hair! Wth is a random hair doing growing there? I'm not just talking about a regular hair, this hair wad 3" long without exaggeration and black and thick like a pub. Thank you very much mother nature