While Brian would like to claim his "rules" are hard and fast they aren't. Brian is a hardass except when he's not. He doesn't eat carbs and fat after 7 except when he does. He doesn't give a shit or apologize or feel regret, except we know he sometimes does all of the above...
Part of what Brian is *says* is what he wants his image to be. For example I am sure he and his tricks don't all have 9 inch cocks.