Word up,（你说的对） parents. If your teen is suddenly speaking what seems like an entirely new language, don’t worry. Slang (俚语) is just a part of growing up, says Connie Eble, an English professor at University of North Carolina and author of Slang && Sociability.
 “It’s part of this whole range of behavior that they are trying on,” she said, comparing the use of slang to clothing. “You try it on, and you take it off, and most of it you don’t keep very long.”
     Teenagers of every generation have used slang to stand out, yet still be their age like other people, says Kathleen Waldron, a professor in the College of Human Services at Arizona State University.
     It’s wise for parents to be familiar with their lingo, Eble and Waldron say.
 “You should try to know it, so when you hear them talking, and you think it’s innocent, but it’s really about a drug deal, you’ll be clued in,” Waldron said.