Yes, 'winter penis' is real, and size isn't the only trouble - Times of India

Science News: A theory on how the seasons impact private parts establishes that in cold weather Men can expect their penis to shrivel by up to 50% in length and 20%

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Can girls tell the size of a boy's penis in a Speedo? - Quora

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Why Your Penis Shrinks in the Cold

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Brace yourself, boyswinter penis is a thing and it's NOT good news

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Winter penis' is real and size isn't the only thing it impacts, sexpert claims - Mirror Online

Why Your Penis Shrinks in the Cold