That definitely doesn't look normal to me, looks more like a growth or hernia., maybe testicles outside the body?I take it the kitten is urinating OK? I would definitely have that checked out by a vet. If you do, make sure you rub him down good when you get home with a dirty shirt of yours, or a bedding blanket from the nest to erase the vet smells, you don't want mama to reject him. Please let us know what you find out, I'm curious to see if anyone has seen that before. The poor little mite!