That and if he turns out to be a bad son, then he will have to have to have punishment (http://image.dhgate.com/albu_249218452_00/1.0x0.jpg) for a full day.  James wants his family to be sexually free, yes, but also learn some self control.  I'm sure that Dakota knows about this punishment and maybe has even been punished this way before......or not because he is a good son  ;)