A week or two ago I posted a link on FB about how bad driving might be a genetic trait. Continuing with my interest in unusual biologic quirks, there's now evidence that finger length could be related to dick size.
That is, how big of a dick you are.
Androgen contributes to masculine traits, with emphasis on strength and aggression. It also affects finger length. Higher amounts of Androgen will make the 4th finger longer than the 2nd or 3rd ones, even in the womb. Monkeys with higher levels of the hormone act more aggressive and...well...loose.
So now that you've checked your hands, check your guy's or gal's hand. Sure wouldn't hurt to get a little extra intel.
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