Batteries

Mummy - "Shall we change the battery? That will make your train go faster"
Neo - "Yeah"
Mummy removes the battery, and passes it to Neo
Mummy - "Can you put it in the bin please"
Neo - "No, you don't put batteries in the bin"
Mummy - "Oh yeah sorry, I forgot"
Neo - "Yeah, they kill rabbits ... And I like rabbits"
Mummy - "The chemicals in the battery you mean"
Neo - "yeah they go in the mud and grass, then rabbits die"