This guy is called Stevie Starr. He's quite famous and goes back to the 80's. I've always wondered trick or real? It's hard to tell. The Billiard ball is tricky one.
Well we always hear about those strange mutations/rare diseases that people have on the outside of the body - people with too much body hair, elastic skin, giant eyes, skin that falls off... I wouldn't be surprised if there are just as many rare diseases/mutations on the inside too.
I actually saw this guy live when I was in Great Britain. Same as with any "magic" act. Watch him hands very closely. You'll notice they either go in his pockets or behind his back, especially when he does things like "lock the ring into the padlock" There's an easy one to find that's in slow motion where he used a cell phone. Unfortunately for him he goofed that one up a bit.