"All kids think they are smarter than their parents." - my father, constantly growing up
What I learned: Never tell anyone else how to think or feel about anything. Anyone that tries to shape your thinking directly is a fool.
Intelligence is like beauty, we don't have a very good frame of reference to perceive ourselves. Physical beauty is largely measured by the reactions of others. Like beauty, intelligence has many facets. However my favorite measuring stick is curiosity. This is how I overcame my father's admonition; while curiosity does not guarantee intelligence, an intelligent person is always curious.
Nah... if someone keeps trying to stick a fork in the light socket or tries to hurt other people, I think its pretty justified to try to change the thinking that leads to that behavior.
If someone doesn't know what a fork and a light socket are and can't otherwise deduce what they are based on context, maybe it makes sense to stick a fork in a light socket.
The response is a purposeful obtuse way to make a binary snide comment. These one comment judgments are tired and just not a good way to grade much. Be more creative at least.