Related Clues:

• Beg Diana for light banter
• Raillery, give-and-take
• Frivolous banter
• Might trains get to rely on such banter?
• Banter about the train service, perhaps?
• Seems the older you get the worse you get in a playful way
• The sort of frivolity one might expect from a dirty old man
• such frivolity might one a nasty old man
• The sort of banter you'd expect from a naughty old man
• Banter for training, perhaps
• It's no good in time for banter
• No good being old if it makes you so playful
• The sort of jokes you'd expect from a nasty old man
• Playful enough, in a manner of speaking, to make one naughty at last
• Sounds as if perhaps one might need training for such banter