Mr. President: After imitating a sex act last weekend on "Saturday Night Live," it was hard to imagine how Lady Gaga and R. Kelly might approach their performance of "Do What U Want" on Sunday night. They went high concept, casting Kelly as the president and Gaga as a Marilyn Monroe-like figure. Throughout the course of the song, Gaga dances on President Kelly's desk as he gazes up at her, their relationship is outed on Instagram and Kelly storms out when a reporter starts questioning him about the affair.