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."

A father was at the beach with his child...
A father was at the beach with his children when his four-year-old son ran up to him, grabbed his hand, and led him to the shore, where a seagull lay dead in the sand. "Daddy, what happened to him?" the son asked. "He died and went to Heaven," the dad replied. The boy thought a moment and then said, "Did God throw him back down?"