We were out on Friday after the Darwin lecture, drinking and playing pool with two of the gardeners from the botanical gardens. Twice over the course of the evening, I caught the bloke with his belt in his hand and told him to put it back on. Which he did, after meting out a few smacks. At chucking-out time, he phoned for a taxi to take us home. He told them that we were at the "Cambridge Sports and Sexual Club."