Related Clues:

• Banter about the train service, perhaps?
• Rallying this before the brother is around
• Banter for training, perhaps
• Sounds as if perhaps one might need training for such banter
• Perhaps training for banter
• Ridicule this by train, perhaps
• Light-hearted friendly talk
• Mockingbird with lyre-shaped tail
• Jesting at one attempting to slim
• Remove lead from bumps felt on track with light ribbing
• (Example of) banter
• Good-natured teasing
• Humorous ridicule
• Banter, back-chat
• Raillery (before in old railway)