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[–] [S] 12 points 18 hours ago (5 children)

Oh, ok, well that sounds fine... But they get hard when they're cold. Thinking about it, it's kinda odd you don't get hard when you're cold too. (Or maybe you do, but I meant all guys.)

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  • [–] 9 points 17 hours ago (4 children)

    Wait a minute. You're right. Why DOESN'T it get hard when cold like my nipples!? What the hell!?

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  • [–] 17 points 16 hours ago (3 children)

    Because your nipples get hard due to the erectile muscles (same as goosebumps, a holdover from when we were hairier), and your scrotum is constantly adjusting to keep the ideal temp for sperm production/genital function.

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