There's a tradition in Zen (especially in Japan) of writing a "death poem." The tradition is that a monk, on his deathbed, spontaneously recites his final poem, which is recorded by his pupils. I have my own take on what really happens, which is...well, read this one. (And, you can buy the book, Japanese Death Poems, Yoel Hoffman, trans, and ed,, at Amazon and elsewhere.)
"Writing my death poem." "But you're not on your death bed." "But, now, I have time."