Maybe you would know if this is the right line of story...

I thought Michael stole tons of money that belonged to Justin, went to Prison and became this "HUGE black dudes" 'woman'. I have been looking for it... I wasn't sure what kind of story it was, as there was no forewarning, because I don't normally read rape stories. But, all the guys had their turn, then the black guy made him his. Maybe it will trigger something for you...