Oh my goodness how could I have got it so wrong, he's pregnant!
Now I know that can't be true, I thought the darker Naughty Twin was a girl at first, then I thought he was a boy who got involved in a relationship with Spit now I've just seen him and he's heavily pregnant. I guess that's the problem with twins, sometimes you just can't tell them apart. Now does that mean that the lighter Naughty Twin is really a boy and not a girl?