How do you shave your balls? Every time I've tried with my trimmer it pinches and tears my sack and I'm too traumatized to try it again unless there's a full proof bloodless method. Usually I just pluck as many as I can tolerate while I'm sitting around watching YouTube or somethin. But it's such a pain (literally). Pic unrelated
From my experience, the occasional nick is just a part of the process unfortunately.
I find that, similar to shaving one's beard hairs, holding the skin taught tends to help. Also, just take your time - trying to be hasty guarantees you getting nicked.