How is the title 2br02b relevant to the story?

"2 B R 0 2 B"  was a story by Kurt Vonnegut, published in 1962. The title of the story "2 B R 0 2 B " was taken from the famous phrase "to be, or not to be“ from Hamlet, by  William Shakespeare. In this short story, the title 2BR02B was a telephone number which will allow a character of the story to make an appointment to commit suicide if he is tired of living.

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