Today's method of overdoing it prevention

Today, the method of preventing overdoing things is wearing a dress.  It is a birthday party themed event, and there will be games, and my kid will want to play them, and I know that I will want to play them, too, so I will wear a (very informal) long dress, so there is no way I can give in to the temptation to do something silly that will cause me pain for days.  Dresses are so very useful.