"Sometimes," I said, "it seems to me that a friend might not take such pleasure in making fun of me as you do."
"Dear Odd! If one's friends do not openly laugh at him, they are not, in fact, his friends. How else would one learn to avoid saying those things that would elicit laughter from strangers? The mockery of friends is affectionate, and inoculates against foolishness."
Chapter 11; Odd Thomas's recounting of a conversation with Little Ozzie - Forever Odd (2005)