This post belongs to a parent post.
So, I, uh...hmm. What's going on with his arms?
If I were to hazard a guess, they are being sucked into the boob dimension.
Seems his arms are an extension of his legs, where his lower legs and feet would be, providing that it's his crotch we're looking at in the middle of the arms. The only other thing I got is that he's a co-joined twin, and they're both horny...