Being present in daily life is hard which is why our brains do so many things on "auto-pilot." It's a helpful tool but, much like self-driving cars, it's imperfect and can get us in to a lot of trouble. For example, we've all at some point, while holding an item in each hand, gotten confused between which item was in which hand. Depending on the items, this simple auto-pilot mistake can lead to a significant amount of chaos.
1.) From theWildBore:
This was my brother, but I was on the receiving end. We were at a country club for a wedding one evening and there were various backgammon games set up. This happened so long ago I don’t even remember how to play backgammon anymore. But it was my brothers turn and he was excited. So excited he slammed his glass of bourbon down on the game board and thrust the dice cup full of dice into his mouth. Totally worth being covered in water down liquor to witness such buffoonery.