English joke: the name of the poet

The name of a poem Our teacher is telling us about a new memory training system, which is currently being used in some schools. "It works like this," she said. "Suppose you want to remember the name of a poet-for example, robert burns." She told us to think of him as Bobby Burns. "Now imagine in your mind a London policeman, a policeman on fire. Do you see it? Bobby Burns! " "I see what you mean," said the person who is known in the class. "But how do you know it's not robert browning?" Our teacher is introducing us to a new memory training system that is now used in some schools. "This system is like this," she said. "Suppose you want to remember the name of a poet-for example, remember the name of robert burns." She told us to think of him as Bobby Burns. "Let your mind flash out the image of a London policeman, a burning policeman. You got it? The police are burning! " "I see what you mean," said the know-it-all in the class. "But how can you say it's not robert browning?"