Children use secret vocabularies to

Children use secret vocabularies to communicate with their intimate friends. These can be written, consisting of codes formed by symbols or the written, consisting of coder formed by symbols or the substitution of one letter for another; verbal, consisting of distortions of words-ping Latin for example; or kinetic, consisting of gestures and the use of fingers to communicate words. Most children start to use one or more of these forms at the time they enter the third grade, and their use reaches a peak just before puberty.