the 2010 American Dad! episode "Son of Stan", Steve and his temporarily created clone, Steve-arino (voice of Scott Grimes), were briefly seen using an idioglossia in speaking to each other. In episode 212 of television show Rules of Engagement, twins attending a party speak in twin language and state that twins often have their own language that only they can understand. The television series Second Chance have twin sister and brother Mary and Otto Goodwin who sometimes use twin speak to communicate with each other. In the series finale of The Office, Angela Martin and her sister Rachael Martin use twin speak at Angela's bachelorette party. See also Argots, secret languages used to prevent others from understanding conversations Glossolalia Home sign, a similar phenomenon among sign languages Non-lexical vocables in music Private language argument References Further reading Macaronic language