MATHS HOMEWORK

Little Johnny is busily doing his homework, muttering to himself as he does it.
When he gets to his math homework his mother overhears him doing his additions "Seven plus five, that son of a bitch is twelve. Three plus five, that son of a bitch is eight."
"Hey Johnny. That is not a nice way to talk. What is all that talk about?" she said
Johnny mumbled, "I'm just doing my homework Mum."
"I am sure that is not the way you talk in class Johnny?" said Mum.
"Yeah Mum. This is the way the teacher says it." he answered.
Shocked, and a bit curious Johnny's mum takes him to school the next day, and calls the teacher aside to get an explanation. "Mrs Jones, What are you teaching the children in maths class?"
"Mainly we are covering simple addition". she replied "Why? You seem upset."
Johnny's mother asked, "And, as part of math, do you teach them to say things like five plus five, that son of a bitch is ten?"
Mrs Jones roared with laughter. It took a while before she could answer with, "What I taught them was, five plus five, the sum of which is ten. I can't imagine where he could have learned the other!!"