(Rolling, sound, go)
"Now, come on - get moving. There's people to pull and parcels to push. We haven't got all day." The Fat Controller puffed himself out until he was as wide as he was tall.
"I can't" came the plaintive reply from the gloom of the arches under the road.
"Of course you can" the Fat Controller puffed. "What else is there for you to do ? Now come on, couple up !"
"I can't", came the wheezy reply.
"Why not ?"
"I don't like to talk about it"
"Then get out here and start hauling, or I'll send in the diesel to drag you out by the couplings".
"I can't"
"Then tell me why not"
"The other engines are all picking on me"