Yes, there IS a Difference.

I don't care what you say, there is too a difference between bad and BAD. BAD , although spelled the same is something you wanna be, and is said with feeling, as in "but you wanna be BAD!"( see http://jedilizard.blogspot.com/2006/04/but-you-wanna-be-bad.html for explanation.) Bad is something you get in trouble for being. Now which one would you rather be?

May the Force be with you, Micheal Jackson.