A lecture about English
A linguistics professor was lecturing to his English class one day. "In English," he said, "A double negative forms a positive. In some languages, though, such as Russian, a double negative is still a negative. However, there is no language wherein a double positive can form a negative."

A voice from the back of the room piped up, "Yeah, right."

Business is business
A young Jewish boy starts attending public school in a smalltown. The teacher of the one-room school decides to use her position to try to influence the new student. She asks the class, "Who was the greatest man that ever lived?"A girl raises her hand and says, "I think George Washington was the greatest man that ever lived because he is the Father of our country." The teacher replies, "Well...that's a goodanswer, but that's not the answer I am looking for."Another young student raises his hand and says, "I think Abraham Lincoln was the greatest man that lived because he freed the slaves and helped end the Civil War." ... "Well, that's another good answer, but that is not the one I was looking for."Then the new Jewish boy raises his hand and says, "I think Jesus Christ was the greatest man that ever lived." The teacher's mouth drops open in astonishment. "Yes!" she says,"that's the answer I was looking for." She then brings him up to the front of the classroom and gives him a lollipop. Later, during recess, another Jewish boy approaches him as he is licking his lollipop. He says, "Why did you say, 'Jesus Christ'?"The boy stops licking his lollipop and replies, "I know it's Moses, and YOU know it's Moses, but business is business."