Why Is This Woman Laughing?

I KNEW something else was bothering me about the ISAIAH WASHINGTON insanity at the GOLDEN GLOBES...& while watching the week-end round up of the gossip shows it hit me!
Just why the hell does GREY's ANATOMY creator, SHONDA RHYMES laugh out loud when Washington repeats his slur?? Was it a nervous response? Does she really think the word Faggot is funny? What you do not see on the video is what started this latest incident. During the back-stage winner's press conference a reporter, asked a question regarding the on-set fight verbal & physical violence instigated by Washington. Ms Rhymes responded: "Are you serious?" "Are you serious?" YES! Ms. Rhymes this is a very serious matter & nothing to laugh about!