My brother, Rob, whom you met in my previous post, once had an anorexic girl friend, although he was famous for his dinner parties. At one of these late into the night, several of his friends, sitting around the table still, found themselves convulsed by laughter.

“Stop! Stop!” shouted girlfriend as she leapt from her chair

They fell silent, mouths open.

“Can’t you see?” she demanded. “You must stop laughing. It is making you fat.”