Horowitz was on Larry King to defend Ann Coulter's vicious attack of the 9/11 widows in her new book. He wasn't actually booted off the show, but when he defended Coulter by saying that she didn't write the book for money...well...I hear she's such a giving person. It happens at about the three minute mark.
Horowitz: and I don't think for a second that she wrote this book for money, ahh..
Everybody on the set broke up in laughter. It was such a ridiculous statement that he started laughing at himself.
People like Horowitz say the stupidest things to justify their arguments.