I just had a thought while I was reading the history of Medieval Europe...
The great philosopher, rhetorician and eventual Pope Augustine at one point in his Confessions claims that sodomy is against nature and therefore against God (a sin) no matter what the circumstances of it's occurence.
Now, Sodomy, is defined in Genesis XIX 5 as: carnal copulation in a manner against nature; buggery.
Given this information I shall be so bold as to claim that God committed sodomy with Mary, now before you religious bible thumpers jump on my back, let me justify myself.
The word Carnal means "wordly or earthly, of the earth" so you might be thinking, this rules God out then right? Well, yes, but while God may be ruled out, The Virgin Mary isn't. God impregnated her, how? Well not naturally thats for sure, as she wouldn't be a virgin if she was naturally impregnated. Therefore, the Virgin Mary was unnaturally (ie. against nature) pregnated by God and therefore was sodomized by God, making God a sodomite, or one who commits sodomy. BAM! Done, you lose, no room for argument.