Turn signals are not optional decorative elements on vehicles. They have a function and that function will prevent me from smacking you into next week during rush hour.
Toilet paper does not magically reappear on the empty holder the moment you leave the bathroom. You must actually retrieve a new roll, unwrap it, and hang it on the holder yourself. Seriously.
Little Debbie Swiss Cake Rolls are not a food group. They are not even a food.
Oddly enough, I do not instantly lose my hearing when your cell phone rings. I can hear every detail as you discuss your latest bout with oral gonorrhea, your child's most recent arrest, or your laughable excuses to debt collectors.
What are some other things we shouldn't have to tell people? :D