"What is this, Rollo?"
"I dunno," said Rollo, hesitatingly.
"Sure?" asked his father. "You do not know what it is?"
"Nuck," said Rollo.
"It is A," said his father.
"A what?" asked Rollo.
"A nothing," replied his father, "it is just A. Now, what is it?"
"Just A," said Rollo.
"Do not be flip, my son," said Mr. Holliday, "but attend to your lesson. What letter is this?"
"I dunno," said Rollo.