School Mathematics
Little Moshe was busy doing his homework. As his mother approached she heard: "One and one, the son-of-a-bitch is two." "Two and two, the son-of-a-bitch is four." "Three and three... "
His mother interrupted, asking where he had learned this way of doing math. Moshe remarked that his teacher Ms. Clara Jones taught him.
His mother was rather upset and told him to stop the homework. The next day she stormed into Little Moshe's classroom and confronted Ms. Jones. Little Moshe's mother told Ms. Jones about Moshe's different way of doing math and his claims that Ms. Jones taught it that way to the class.
The teacher was flabbergasted. She said that she couldn't understand why Moshe had said what he did. Then suddenly, Ms Jones exclaimed, "Oh, I know... here in school we say, one and one, the sum-of-which is two."