Dogtrousers
Kilometre nibbler
I remember my dad talking about riding a bike that you had to back pedal to change gear. At the time I thought he was referring to hub gears, where you ease off or stop (but don't actually back pedal) when changing gear. Now I think it was probably one of the 1930s derailleurs. It was one of his long convoluted stories possibly involving newts. Sadly he's no longer around to ask for clarification.