A linguistics professor says during a lecture that, “In English, a double negative forms a positive. But in some languages, such as Russian, a double negative is still a negative. However, in no language in the world can a double positive form a negative.” But then a voice from the back of the room piped up, “Yeah, right.”

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Send your groaners to Maureen Dolan, mdolan@cdapress.com.

Remember: Keep ’em clean and don’t be mean.