It does bleed and it does hurt. I wrap mine in a towel with just the head sticking out. I cup handfuls of ice water over the head in between cuts. Sometimes, I use flour to help with the bleeding. You need to wait until their comb has stopped growing. That's why you need to wait.
If your not showing, than there is really no reason to trim the boys.
If your not showing, than there is really no reason to trim the boys.