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 recent study showed...
A recent study showed that the average husband only actually speaks to his wife about thirty-seven minutes each week. Well, yeah, I can believe that, I mean just how long does it take to say "Uh-huh" or "Yes dear" or "I'm sorry" ?