A Jewish student was doing well in school in all subjects except for Math. So his parents decide to send him to a private Catholic school.

While there the boy came home from school and studied every day. At the end of the marking period the boy got straight A's. So his parents asked him,

"What motivated you to do so well in school?"

He replied, "When I saw that guy nailed to a plus sign I knew they weren't fooling around!"