**Henry was doing maths homework, saying to himself...**

**"2+5, the son of a b**ch is 7"**

**"3+6, the son of a b**ch is 9"**

**His mother heard this & asked, " Henry ! What is this nonsense you are doing?"**

**"Oh Mom. Don't disturb. I am doing my maths homework"**

**Mom: "Is this how your teacher taught you?"**

**"Yes mom "**

**Infuriated mother picked up her cell phone and called the teacher:**

**"Are you teaching maths to children by saying... 2+2, the son of a b**ch is 4?"**

**There was silence for a moment**

**Then the teacher started laughing :**

**"What I taught them was... 2+2 THE SUM OF WHICH IS 4."**