👉 The "chestnut necklaced" phrase is a play on words that originated from a popular joke, where someone uses "necklace" to refer to something else.
Example: "She had a necklace with a chestnut neck laced around her neck." In this sentence, the person's mistake is not in using 'necklace' correctly, but in suggesting it has an implication of being wrapped or bound by a string. This makes the joke sound both innocent and unsettling.