common sense

We've all been there at one point or another in our lives. We're going about our daily business, just trying to check all the boxes without completely failing, and then boom, someone you know, never met, or you ends up spewing out something into the atmosphere that is discouragingly devoid of common sense. Maybe it's an innocent brain fart, or perhaps it's something more ominous, like pure ignorance. This collection of the dumbest things that people have ever said might at the very least serve to make you feel just a bit better about yourself. 

Someone on AskReddit got a thread going about various bits of common sense that people seemed to learn later on in life. Some of us fall through the cracks, and are unknowingly trying to navigate a confusing life that could make just a bit more sense if we'd learned some of that "common sense" earlier.