Internet slang words such as geili (forceful) and fuyun (a flash in the pan) have successfully found their way into everyday speech. We’ve seen and heard them so many times that we might secretly make a wish that those phrases would disappear in 2011. It’s the same in English. Popular words and phrases get so overused that they become annoying and irritating. Here 21st Century gives you a list so you won’t embarrass yourself and others when talking to foreign friends.