What is wrong with this picture?

On the layover in Atlanta during my flight back from Rhode Island, there was two couples having a bit of fun at the terminal where we were waiting to board our flight. I could not resist taking out my camera and asking them if I could snap the following image of one the gentleman that was obliging in a dare from the rest of his group:


Can you tell me what is wrong with this picture? It made for a good laugh and I took a moment to go over to their group and found out that this gentleman is a Psycho-therapist....I love his sense of of humor.

Have a great evening!