3rd person, singularly irregular

Trying to explain to a friend named Kaliski, who constantly refers to himself in the third person, what “third person” was – evidently someone had commented on his quirk. I explained about first person, and I thought he was getting it. Then I began to explain about second person, and his eyes glazed over. When I got to third person, he said affably, "I don't know, Kaliski might be stupid, but Kaliski just doesn't get the whole third-person thing."