...a pinball is bouncing in head? I am wondering if this has happened to other people or just me...sometimes when I run around or jump around or even just moving my head for some reason, it feels like a pinball is bouncing off the inside of my skull and I can hear it and feel it. This happened to me when I was younger and just recently it started happening again. I have no idea what it is but it feels really weird. Do I have some kind of medical condition or is this a common thing people can experience?