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."

Biblical Bumper Stickers
Adam: "You are what you eat."

Eve: "At least he doesn't compare me to his mother."

Abraham: "I'm goin' not knowin'."

Noah: "Honk if you believe in treading water."

Moses: "From a basket case to the promise land."

Elizah: "When Jezebel ain't happy, ain't nobody happy."

Balaam: "My second donkey talks!"

Prodigal Son: "All roads lead to home."

At the Sinai desert: "Winding road next 40 years"

At the Red Sea: "Caution! Subject to sudden flooding"