Before you were born, your brain was female.

Well well well, guys, take a look at this article from Mens Health.

I know it sounds trippy, but it's true, and if you want to understand the mysteries of the female brain, you need to accept it. Throughout the first 2 months of pregnancy, every embryonic brain is wired for girlhood. If that embryo has female genes, its brain will continue to develop with little interruption. But in a case like yours, all hell breaks loose in the third month, as a pair of extremely tiny testicles begins to send squirts of testosterone through your developing body.

As the hormone enters the nascent brain, it will arrest development in certain regions and stimulate growth in others--notably, the ones that govern your sexual appetite.

That's just the beginning, for after you're born, the sex cabinets in your male brain just keep expanding. Indeed, the portion of your hypothalamus that governs sexual pursuit will grow larger and stronger until you reach adulthood. Scientists are unsure of its exact size in humans, but in other mammals, it's known to be as much as seven times larger in males than in females. It has been estimated that the sex circuits in a typical man's brain light up once a minute--much more often than a woman's.

I guess we men were the first mutants. Now where are my superpowers?