This man is from a now extinct species, a type of buttoned-up character who was common in the 1950s and 60s. When this picture was taken, vast numbers of men wore suits to work every day, even to the most ordinary jobs.
I like the balance of the composition, and the man’s still, watchful pose. But it didn’t take me long to realize the shadow can be interpreted in an obscene way. You can’t not see it now, can you?