It thought I was Paparazzi. I was kneeling on the ground to take the squirrel's photo when it suddenly jumped onto my right shoulder.
First it investigated my ear, then leaned forward to see my nose, then climbed around my back, and then to my left shoulder.
When it finally determined I wasn't a tree it jumped to the ground, ran off, and found a real one.
I laughed the entire time and for quite a while after.

Prior to the mugging I took a few photos but it kept moving too close for the lens I was using.
So, I kept shuffling backwards and then it would follow. I think that is why it jumped to my shoulder.
This was the best shot I got.