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."

An Example of Tragedy
Winston Peters is visiting a school.

In one class, he asks the students if anyone can give him an example of a "tragedy". One little boy stands up and offers that, "if my best friend who lives next door was playing in the street when a car came along and killed him, that would be a tragedy".

"No," Winston says, "That would be an ACCIDENT."

A girl raises her hand. "If a school bus carrying fifty children drove off a cliff, killing everyone involved... that would be a tragedy". "I'm afraid not, "explains Winston, "that is what we would call a GREAT LOSS."

The room is silent, none of the other children volunteer. "What?" asks Winston, "isn't there any one here who can give me an example of a tragedy?"

Finally, a boy in the back raises his hand. In a timid voice, he says: "If an airplane carrying Winston Peters was blown up by a bomb, THAT would be a tragedy".

"Wonderful!" Winston beams. "Marvelous! And can you tell me WHY that would be a tragedy?" "Well," says the boy, "because it wouldn't be an accident, and it certainly wouldn't be a great loss!"