Little Johnny, whose dad was an avid Blackjack and Poker player, was being quizzed by his teacher.

“Do you know your numbers?” the teacher asked.

“Yes,” Jonny replied. “My father taught me.”

“Good. What comes after three?”

“Four,” answered Jonny.

“What comes after six?”

“Seven.”

“Very good,” said the teacher. “Your dad did a good job. And what comes after 10?”

“Jack.”