Twi'leki/Legends

Twi'leki or Ryl was the native language of the Twi'leks, expressed by subtle movements of one's lekku. This came in handy when Twi'leks are in crowded places, and want to have a private conversation, since there are hardly any non-Twi'lek who can understand Twi'leki. One exception was the Jedi Master Kit Fisto.