User blog comment:SSWerty/The Swetty reviews/@comment-3097771-20110408054641/@comment-1821137-20110409183254

I don't believe that Kid Buu could bleed or relieve himself. It's just that Super Buu has human/saiyan properties since he's absorbed them. That way, he got human/saiyan characteristics. Therefore, he can bleed and relieve himself. However, a magic being like Kid Buu without absorbing someone and taking its characteristics, I don't believe that it would have blood in itself.