Those bulge pictures prove what my friend saw in person. He's a fellow "low hanger" fan like me and he was backstage at a Broadway show that Barry was in (I don't know what one) to visit a friend of his who was in the show.
He was standing by his friend's dressing room door, and my friend saw that it was opposite Barry's dressing room, and Barry was changing with the door open a bit and his back was to the door, he was naked and was bending over and his HUGE pendulous balls were hanging down as he reached forward down to his feet in front of him.
Like some of you said, he became a fan right then and there when he really didn't know Barry's work at all prior to that day - he obviously wasn't a Rocky Horror fan like me!