What is the simile for skull like coconuts in lord of the flies?

In "Lord of the Flies," the simile "skull like coconuts" is used to describe the appearance of the pig's head that is mounted on a stick, also known as the "Lord of the Flies." This comparison highlights the juxtaposition of the natural and primal instinct within the boys with the innocent and nourishing image of coconuts, emphasizing the dark and disturbing themes of the novel.