That's not only freakish, it's nasty looking. As in ugly looking.
If I had to guess, I'd say he's injected himself with silicon to enlarge his cock.
I met a guy once in Toronto who did it (silicon injections (long story)) and he showed me his cock. It was a freakshow. His dick was hugely thick I remember, but the head was normal sized. The skin surrounding his cock appeared to be about an inch thick I remember. His dick was largely useless though. I would not get hard, it would not get soft. I just was. I remember thinking it looked like a jelly roll with a cock head sticking slightly out of the end.
The dude in the video also appears to have splayed his cock head, which you can see because is slit is so fucked up.
All in all, that is one surgically altered ugly assed cock. (But in keeping with the freakshow that is its owner I'd say.)