OMG, how did you get my son in your house????? I'm sure someone will have ideas for you and I will listen to them also. I do the same thing you do...try to logically explain why he should or should not do something and he invariably finds a loophole and condescendingly points it out. BUT, my husband does not have the problem with him like I do or his teachers do. My son will listen to him first time without arguing much of the time.