(Today in class, during a pop quiz...)

me: "C, keep your eyes on your own paper. In fact, please go sit in the last seat in that row."
C: "Aw, Mr. E, my people 'been fighting so they didn't have to sit in the back of the bus. Now I ain't sitting in the back of the classroom!"
me (softly laughing): "Please just move."
(she moves)
(a minute later)
C (singing softly): "We shall overcome, we shall overcome..."
me (laughing uncontrollably): "Oh Lord..."