The toe tee

Some things, you just don't know how they happen.
I rose this morning to take my morning constitutional. I got dressed, got my keys, wallet and cell phone (all the standard items a guy needs these days) and was out the door. Then I thought I felt something in my shoe when I went down the front porch steps. But as soon as I was on the sidewalk everything felt fine. So I kept walking.
Nothing more happened at first. But once I was about four blocks away I definitely felt something. Leaning against a tree, I took off my shoe and, holding it upside down, shook it. Nothing.
Huh? So I felt under my foot to discover something under my toes. Taking off my sock and reaching inside I found - I am not making this up - a blue broken golf tee.
How in the world did such a thing get inside my sock? It was a fresh pair which I had rolled together after taking them out of the wash and putting them in my sock drawer a few days ago.
I got nuthin'.