slang When Americans is chatting, I have trouble in understanding .The reason is that they are crazy about using the slang. Althougt we can't understand it ,but it can make language colourful. For example, it is raining cats and dogs now. That is meaning that the rain is heavy. If you are on the hook ,that is ,you are in dangerous. As fish is on the hook ,of course ,they are in a big trouble.But if you are off the hook ,you are safe. Seems intresting, why not give it best shot. Anyway , I will watch more movies and learn more.