Your arms are in the way.
As I approached the group of onlookers of a street performer this body builder image was in front of me. I gasped (and hit the shutter) at the sight of those arms.
Did you poke him in the back with your index finger and ask if you could see too? ;D
I wonder if he's a football player! Gee, Barb, you could have asked him. Hee, hee...