Based on years of experience with different slaves, I want to stipulate the difference between cock and ball play and cock and ball torture, as I see it.

Cock and ball play includes ball weight training and cock bondage.   Ball weight training is NOT ball stretching.  Wearing a ball weight can be quite erotic and is very different from having 10kg hanging from your nuts.

Cock and ball torture , I include stretching, squashing, binding and ballbusting/kicking, punching, cock caning and any other form of torture to the cock and/or balls.