Ellen Jovin is a guru of grammar who's traveled the country, setting up a table to answer language questions from all kinds of people.

Have you ever been a part of a conversation that you didn’t quite understand because you were unfamiliar with some of the vocabulary?

Vacation, lemonade, air-conditioning…. Ever wonder the origins of the words we use during the summertime? This hour on Focus, Jeff Bossert talks with Patricia O’Conner, author of “Woe is I” about summer grammar. We welcome your grammar pet peeves and questions this hour on Focus!

The devil really isn’t in the details, and rarely does anyone literally pull your leg. But we still use these expressions. Why and where do they come from? This hour on Focus, we talked with Christine Ammer, author of the new American Heritage Dictionary of Idioms.