Carl Icahn and Bill Ackman trade insults on live TV

Just when you thought the great Herbalife hedge-fund smackdown couldn’t get any crazier … Billionaires Bill Ackman and Carl Icahn went toe-to-toe on a live 30-minute TV debate today, trading insults and putdowns like a couple of schoolyard toughs. Each took turns trashing the other’s reputation — and at least…