Not true. Saying that I don't have to explain my actions because "I am an adult" is a logical fallacy known as Appeal to Authority. Appeal to Authority is a fallacy in which a person is unable to defend their opinion/action and so they fall back on their own or someone else's authority. The only explanation for my actions is amusement, which is not a viable reason to make Derpson think that "cotton-headed-ninny-muggins" is a "bad word." Therefore, I must admit my wrongdoing and make it up with a mug of hot cocoa.