He’s An Adult
This person was told that they needed to hand in a doctor’s note to their boss to explain why they took a day off. As kids, everyone’s required to provide a doctor’s note or a note from their parent for an absence to be marked as excused or acceptable.
But this person felt that adults shouldn’t be required to follow this rule, so they handed their boss a note that read “I’m an adult.” Can’t argue with that logic!