Parents must be aware that "WBU" is a harmless and friendly slang term for kids used in text conversations. It simply means "What About You?" and this helps keep conversations alive. There is nothing sinister or inappropriate about it. So should parents see their kids using this in chats, they need not be worried in the least. But having an understanding of such terms gives parents a bit of an edge in keeping track of their children's online conversations. Parents should also know the WBU alternatives Meaning.