there's a small possibility that our cock/bung holes are actually worm holes connecting to our oesophagus. what we eat/drink don't actually go into our stomach, but transfered to a dimension hopping, omniscent parasite species. to keep up the illusion of digestion, they transfer their wastes into our system via dimension hopping and, to keep the food source alive, lets us keep some of the nutrients.
just don't expect me to take it seriously.