I have a bump on the back of my head, it's this bony knob on the back of my skull. You can't see it, if I shaved my head bald you might see it but if you felt the back of my head you would definitely feel it.

I also have two small bumps - one in each of my temples that my doctor said were cysts. He told me not to worry about them unless they get bigger, and they never have, and I've had them for maybe 10 years or so. You can't see these either but you can feel them.

On my right thumb, I've recently developed a nasty callous. I'm guessing it started from using my thumb to pluck my guitar strings when I tune it, but over the past few months its gotten bigger, and now its really dry and cracked and can be painful and irritating. I've tried slicing it off, but the skin underneath is so sensitive it stings like a motherfucker as soon as the blade cuts through it.

I guess that's about it for me.