You might think this post title is some vague and obscure reference, but it's not. I actually have a penny in my left shoe.
The other day in the car I was putting change in my change holder built into the dash. And a penny slipped out of my hand and slid down a fold in my jeans and went right into my shoe.
Normally a bulge on my sock, or a stone in my shoe would drive me insane, but I gotta say the penny didnt bother me at all. So I left it in there. Today is day 4 with the penny bouncing around in my shoe.
I'm not sure why I havent bothered to take it out yet.