Sports Illustrated:

The NFL locker room is the ultimate boys club. Yes, we talk about horrendously inappropriate things. Yes, we make fun of each other. And yes, we have a tendency to take pranks a bit too far. But at the end of the day, this is not a normal job.

Interesting point of view from a guy in the room. I only played high school football but there are still faint shadows of the locker room he describes.