If [a woman] wishes to conceive a male, let her husband take the womb and vagina of a hare and let him dry them, and let him mix the powder with wine and drink it. Similarly, let the woman do the same thing with the testicles of a hare, and at the end of her period let her lie with her husband and then she will conceive a male.^*

Considering what we know of modern medicine and the impossibility of ancient man to understand the mechanism behind chromosomes, I've seen dozens and dozens of different methods to conceive a son ranging from staring at statues of men to drinking bull semen. What was stated above is one of the more mild procedures out there, although still crazy when you think about it: "Would you like to drink this wine spiced with hare womb and vagina?" Still, what threw me through the loop is when I did some research into this and found people are still doing some crazy shit even though we all know by this point how the baby's sex is determined. Oh well, humanity is humanity at the end of the day.

^* Medieval Science and Technology, Elspeth Whitney (Westport, Connecticut: Greenwood Press, 2004): 181.