For 2000 or so years, conventional medical wisdom/quack science held that various bodily substances, known collectively as the four humours, governed a person's physical and emotional disposition. I have my own four humours theory, which is basically that the only things people really find funny are cursing, typos, pratfalls and old people. (This means, for a lawyer, that your day job is about as amusing as a Chris Buckley piece.) READ MORE