Yeah, but what about when that becomes the normal ragget? How will he know what day to not be opposite ragget?It's really not that hard. Just do the opposite of what you'd normally do. Easy peasy.
My pop used to say "When you want to say something, count to 10 before you say it. If you still want to say it, then say it". You'll be surprised how often you decide it wasn't really something you'd want to say after counting to 10.