student asking question

How can I use this expression in other situation? Could you give me some examples please?

teacher

Native speaker’s answer

Rebecca

"Choo-choo on that" is not a general expression here. In this case, he is saying this to talk back to the boy and show his revenge after the boy forced him to eat the baby food. "On that" here refers to the baby food which was spat back in the boy's face.

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