What does it mean to "call" and when should I do it?

What does it mean to "call" and when should I do it?

Frank Scoblete (Casino Gambling Expert & Bestselling Author) gives expert video advice on: What is "poker"?; What are the basic poker hands from weakest to strongest?; What is the basic order of game play in poker? and more...

The game is at the end. There's you, there's him, there's her. The bets have been made. A final bet has been made, and you're going to call it by putting in the same amount of money. What you're saying to the other player when you call is, "Show me your hand." Oh, and you have to show your hand too.