I was listening to the DVD commentary for Mother's Day and David X Cohen mentioned that the Futurama team had some more ideas which tied in with Mom and Farnsworth's relationship which they might use later, but were "keeping under their hats" for now. And it occured to me that the high, sloping forehead of Mom's three sons, especially the one with the black hair, are oddly reminiscient of Proffesor Farnsworth, if you look at the images of him when he was younger the resemblance is pretty uncanny. Is it possible that sometime between Farnsworth quitting 70 years ago and their meeting in Mother's Day Farnsworth and Mom got together?
If this has already been mentioned and discounted as stupid or considered to obvious to warrant being mentioned then my apologies, it only just occured to me. _____________ That's not normal: normal is coming home to find your mother nailed to a cross screaming verses from the book of Mormon, your dad performing a dark ritual with your brother as the sacrifice, and your sister getting railed by a goat.