I think that was at the annual MTV pointless slap on the back and fawn over celebrities bash but yes it's a situation along the same lines albeit incredibly lame singing about some actresses boobs. I find it a bit cringeable that people get some form of pleasure out of a few celebrities feigning...
I don't think anyone is fooled by those fake reactions form the actresses, all in on the joke and 'acting' the reactions funnily enough. All helps sell the Oscars at the end of the day.