Adam Clarke on 1 Samuel 25:22

So and more also do God - Nothing can justify this part of David's conduct. Whatever his provocation might have been, he had suffered, properly speaking, no wrongs; and his resolution to cut off a whole innocent family, because Nabal had acted ungenerously towards him, was abominable and cruel, not to say diabolic. He who attempts to vindicate this conduct of David is, at least constructively, a foe to God and truth. David himself condemns this most rash and unwarrantable conduct, and thanks God for having prevented him from doing this evil, 1Sam 25:32, etc.

Any that pisseth against the wall - This expression certainly means either men or dogs, and should be thus translated, if I leave, any male; and this will answer both to men and dogs, and the offensive mode of expression be avoided. I will not enter farther into the subject: Bochart and Calmet have done enough, and more than enough; and in the plainest language too.