Not a big thing, simply after eating large amounts of food your character will need to poop.
To do this you would take off your pants and...well...idk...make a button for it (obviously when you do it it has to make a fart noise).
Just pooping everywhere will make animals be able to sense it and come to it, which is bad if a bear was near, also would cause flies to appear which drastically decrease quality of nearby foods and some objects. (maybe?)
To avoid this you could dig a hole, poop, then drop soil back on it. You can also make toilets with wood, clay and metal.
Pooping near water (covered or not) will contaminate it, hurting people who drink it for a few days. (Awesome trolling weapon)
If you poop without taking off your pants or wait for too long, you will get Soiled Pants. Anything that takes up either two pant slots will turn into that, which takes away all attributes the pant gives, and drastically decreases Charisma. You can clean them by dousing them in water (Left-clicking them, then right-clicking a water source) and then putting them on a drying rack for 2 or 4 hours, (2 if its day, 4 if its night)
It would be fun and satisfying to kill the guy who murdered your brother, then poop on him.
Feel free to add on to this.
Also need to add i laughed alot when making this topic.