I have an annoying friend that he frequently asks me questions in which he'll be the one to answer at the end if I can't answer his questions. Here the situation goes:
Friend: Hey Jay, do you know the medical term where the nerves intersect, i.e. in the spinal column, that's why right brain hemisphere controls the left side of the body and vice versa?
Me: No. I really have no idea. Sorry.
Friend: It is called "decussation".
Me: Oh okay.
Friend: Now, what do you call a person who frequently asks questions even though they know the answer?
Me: Hmmm I don't have the slightest idea.
Friend: It is ______, Jay. You really need to read books.
Is there a way to describe this kind of personality?