If you are talking about The Exorcist, what made me smile was when Kinderman shoots Karras the line, “I was wrong. You look like Sal Mineo.” And that smile on Karras's face. Makes me grin every time I see it.
When Dyer “tucks in” Karras and moves Karras' shoes, Karras says, “Ya gonna steal my shoes now?”
Dyer replies, “No. I tell fortunes by reading the creases.”
As Dyer goes out the door, Karras says, “… stealing is a sin …”