Well, I'm guessing it's either genetic, or a freak accident, like in the song "Meeskite."
I'm kind of hoping he was caught in some sort of vortex that turns you fabulously gorgeous, because then I might stumble upon it...
"I am special, I am special! Please, God, please, don't let me be normal!" ---Louisa, The Fantasticks
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Intolerant of intolerance.