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."

Best advice possible
Taylor was desperate for business, and was happy to be appointed by the court to defend an indigent defendant. The judge ordered Taylor,"You are to confer with the defendant in the hallway, and give him the best legal advice you can."After a time, Taylor re-entered the courtroom alone. When the judge asked where the defendant had gone, Taylor replied, "You asked me to give him good advice. I found out that he was guilty as hell, so I told him to split."