Ben's lamb, young Norbert - or Nobby, as he is known - has taken a keen interest in becoming a mechanic...
"So this is your tractor, then, is it?"
"Let's have a look here..."
"Hmm. Yes. This bit here may be your problem. Doesn't taste nice at all."
"I'll just check these giant black doughnut things - tyres, you say?"
"Oh dear, oh dear... no taste here either."
"This tractor is very broken. My bill will be in the post."