The poem "Knock Knock", written by Daniel Beaty, is a poem written about the relation between a father and his son, and how the son, being too young, does not understand why his father has suddenly stopped visiting him.
<u>Explanation:</u>
The poem expresses various emotions that a son, now grown up, felt when he missed his father during the growing years of his life.
The poet remembers the days his father used to knock on his bedroom door to wake him up and had suddenly stopped, as his father was imprisoned, which a young boy the poet did not understand how and why the father was imprisoned.
Eventually, as a grown-up man, the poet imagines a letter written to him by his father, expressing why he had been absent in the past years, how he too missed and wanted to be with him.
The letter further goes on to explain to the poet that even though he was not around, there was a little part him alive in his son, who needs to grow up and make sure to make different choices than his father and be around his son and make sure that the same does not prevail with him.
Thus, the lines in the poem depict the message that the father is giving to his son through the imaginary letter.