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 man walked into a gift shop that sold religious items...
A man walked into a gift shop that sold religious items. Near the cash register he saw a display of caps with "WWJD"printed on all of them. He was puzzled over what the letters could mean, but couldn't figure it out, so he asked the clerk. The clerk replied that the letters stood for "What Would JesusDo", and was meant to inspire people to not make rash decisions, but rather to imagine what Jesus would do in the same situation. The man thought a moment and then replied, "Well, I'm damn sure Jesus wouldn't pay $17.95 for one of these caps."