“Sling your knuckles on the bottoms of the happy tin pan, let your trombones ooze, and go husha-husha-hush with the slippery sandpaper” is an example of which literary device?

the tale of “aunty misery” written by judith ortiz cofer , is a folk tale about an old woman who earns immortality by tricking death . the cost of immortality however, is that her life will stay the same. from this tale it becomes clear that death is a necessary evil and is inevitable in life.  

question: which theme is found in the tale of "aunty misery? ”

answer: a. death may not seem friendly, but he should be treated kindly.