Justify My Love is a song by Madonna. Don't justify my broth is about you not wanting to see a bru, bruddah, or broth arrested by the cops. No matter what you call your buddies, you still don't want them to be justified, by the police or courts anyway. A great gift for someone going to court, or for stoners, or anyone not wanting to be arrested by the cops.
Buy this funny cops t-shirt for potential convicts and stoners here: