Is that Suda 51? Looks a bit like him, and after a quick google search it seems like he does indeed like doing the gun with fingers thing:
At first I though he was maybe just trying to replace the "cool v sign" with harder more gangsta posturing, but I actually just think it's some serious pathological disorder and he's not able to actually move his fingers out of that posture. I love the way the first pic at the top is like a typical kind of picture for a dating website or something like "hi my name is Suda, I'm 37, I like to take walks on beaches, oh and don't mind the gun fingers, I can't stop doing that". Clearly it's so serious that he's not even able to break out of it when he needs to use the bog, to the extent that the poor guy can't even take down his pants, since he lacks the opposable use of thumbs :(
Seriously though, cool pic Segata. Also, who's the hottie in the pic? The one with the long flowing hair, and the sparkling yellow eyes,a and the rugged eyebrows?