What does it mean when samneric state that roger sharpened a stick at both ends in the book lord of the flies?

When Samneric mention that Roger sharpened a stick at both ends in "Lord of the Flies," it signifies the increasingly violent and dangerous nature of Roger. Sharpening a stick at both ends suggests a malicious intent to harm others, foreshadowing the savagery that will eventually consume the boys on the island. It also symbolizes the loss of civilization and the descent into barbarism.