I'm still confused... 1. Why do they cut his nipples? What does it do? And is that a usua...

Hi ! Thats a practice to supposedly "enhance" the sensitivity of the nipple, i wouldnt say its normal, but a preference for those who tend to the masochist side.
His d is bumpy cause of body modification, very likely is silicon that was put there, Just like those ppl who do those changes to their faces, body parts etc

Ohhh, I see. Thank you for answering!