In my opinion, this is just outright lunacy. I mean ... how the hell do you wash your back with guns this large?
In case you're wondering, no ... this is not a photoshop.
The guy's name is Greg Valentino and he has (unofficially) the biggest biceps in the world. And although he has been working his disgustingly massive biceps for over 20 years, he does, however, freely admit to juicing profusely.
I hope the arms are working for you, Mr. Valentino, because I'm betting there are squirrels scrambling around with larger testicles that you've got.
...And no, I'd never say that to his face.