Coldplay rocker Chris Martin was so furious when he found himself faced with a critical member of the public, he unleashed an astonishing tirade on her appearance and excess weight. The Clocks star admits he was an "a**sehole" to launch such a personal attack on the unimpressed woman. He says, "When someone insults you to your face about your music, the first thing you want to do is pick on something about their appearance. "It's a terrible thing but I had this woman parked outside our house. She drove me so crazy that I advised her to go to Weight Watchers, which was not a very nice thing to say. "I'm not proud of it but it's weird how if you sort of feel like you're being attacked you can become a real a**sehole."