When the Busy Little B has homework, he's so excited and wants to do it right away and is so pleased with himself and can't wait to show it off.  When S has homework, he spends all his time trying to get out of it.  If he put even half the amount of effort into doing it that he puts into trying NOT to do it, he'd have a whole lot more time to enjoy himself instead of the hours long battle to get fifteen minutes of work done........