I think it’s fair to include jizz blown into your 12 generations of grandmas prior to your conception, though, because that cum was necessary to eventually lead to you being born. Scientifically speaking I think we’re talking about all the man mayo that went into your grandma’s hoochie coochie prior to your conception, but excluding any baby batter that went into the making of your previous older sibling. So we’re only counting the clam sauce that led directly to you, not any of your siblings or any other combination of parents.