A few weeks ago my friends and I had a day at the beach. It was lovely, but the weather is not what I'm going to remember. Or the great tan I got. Or where we went to dinner. What I'm going to remember is how we entertained ourselves. As a birthday present a few weeks prior, my older brother gave me a set of flash cards. Flash cards? At the beach? What am I, some kind of nerd? Well, these aren't just any flash cards. They are for learning urban slang.