B.O.B. and Winehouse have one major thing in common: neither have any shame. B.O.B. will bring to rap reality any idea that crosses his mind no matter how seemingly corny and make it sound awesome, and Amy will ingest substances in plain public view and still manage to have the number one record in all of Europe. So it makes perfect sense that the two would collaborate, even if Amy's appearance is just a sample from "Stronger Than Me."