I think it was MJ's rendition of Elton John. "Feels like your son going down on meeeeeeee." For the same reason that Clay Aiken covered that song.
Trust me, I don't. My only experience with him is seeing him on what little television I watch, and then the YTMND where they edit the Diane Sawyer interview so that it sounds like she's calling him a "queer bitch" and "fruity mc gaygay"