Johnny was a lazy student

Johnny was a lazy student and was failing Maths class badly.

His parents had enough of this, so they pulled him out of regular school and enrolled him in the local Catholic school.

After the first day, he came home didn’t say a word, and went up to his bedroom to do his Maths homework.

He was up there four hours until it was all done.

The same thing happened the next day, and so on. Several days later, his parents came up to his room and asked,

“Johnny, what brought this on? You’re working so hard!”

Johnny replied, “When I got to my Maths class on Monday, and saw that guy above the blackboard unclothes to a plus sign, I knew they weren’t messing around!”