I've seen a question here about the origin of heads or tails but no explanation of why they're plural. If coins were black- and white-sided I doubt we'd be asked to call 'blacks or whites' on a coin flip. Is there a known reason for this? Or some interesting speculation? (-:

marked as duplicate by sumelic, Patrick M, Laurel, Edwin Ashworth, Drew Feb 5 '18 at 22:48

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