I started very aggressive, without lube. The grip, combined with the painful soles, and the fact that I did not have any wall or spot to keep my balance while trampling, did not help at all. There's a lot more weight and sometimes it can happen to crush specific parts of the cock because of the too much pressure squeezing on small portions of the skin. However, I immediately noticed that, so I stopped the video, fixed the little problem, and continued! You'll notice a small edit from one video to another, but I did not remove the aggressive part that caused the damage! Also, it's not all about genitals being crushed but a mix as usual... his balls still hurt after 2 days, but I am not surprised anymore.