Anyone who’s been watching the exchanges in the House of Commons recently can’t fail to have been struck by Cameron’s increasing inability to deal with those who oppose him with anything approaching equanimity. In fact he’s becoming so bad tempered, red-faced and shouty just lately I’m beginning to think, his odious politics aside, that he really is becoming a liability for the Tory party. Seriously, who could possibly want a rude obnoxious bully for a leader? This time last year I was convinced Cameron’s shitty attitude towards others was a simple case of sexism, as he appeared to treat female MPs with even less respect and more disdain than he treated others. But after his embarrassing performance today, I’m starting to think there’s more…