Doctor’s orders
One of the most frustrating work policies is when you can’t take a sick day without submitting a doctor’s note to your boss. What about those times when you have a migraine or a cold, and don’t really need to go to the doctor to know what’s going on? That’s the point of view this person took.
So after this guy took a day off–because he’s an adult that’s capable of making the decision of whether or not he feels well enough to work–he was a little irritated by his boss’s demand for a doctor’s note, as if he was a school kid and needed anyone’s permission. Therefore, he gave him this little card instead.