Have you heard about the corduroy pillow cases? They've been making headlines.
Corduroy Pillow Cases
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Explain Bear
Okay, listen up, buttercup. This joke is playing on the words "making headlines." See, corduroy has lines (or ribs) in the fabric. So instead of meaning they are newsworthy, it means the corduroy pillow cases are literally making lines. I bet you iron your socks, don't you?