minikin

Okay. I did a little research and the only thing that I can find that comes close is something referred to as the Sacrament of First Fruits/Eating the Gods. In this a woman who is bearing her first child but had not yet breast fed will express milk into the mouth of the corpse as a way of saying that he is reborn anew in the next life without the burdens of the past life. Of course this seems to be a custom of an even eariler time period and also seems to be done in many, many different ways other than with breast milk, but being HBO the chance for boobage is too good to pass up.