You would end up impregnating your actual ball sack. One of your balls would form into an embryo, and if both balls become fertilized, you would form two embryos (aka twins). Your ball sack will then grow exponentially over the next nine months, and it will begin to cause mobility issues. You would likely then need to move around using a wheelbarrow or a wheelchair with stirrups. At the end of your nine months, you will go into labor. Your butthole will begin to dilate, and your new baby will begin to work its way out of your ball sack and into your rectal canal. After hours of agonizing pushing and expansion of your butthole, you will give birth to a beautiful little poop covered baby.

– u/bottomtroller