A reader writes
Girl 1: I'd love to have a tail.
Girl 2: Yeah, that'd be cool.
Girl 1: I know!
Girl 2: It would be hard to find trousers though. Well, unless they cut
a hole in the back of them.
(pause) Girl 2 starts laughing to herself.
Girl 1: What?
Girl 2: I had a thought, but I don't want to say it in public.
Where: Train to Brighton