Juton

When two friends form an almost symbiotic relationship, and people who know of them refer to them as one entity. Their inside jokes, actions, thoughts, etc. are all the same and only they seem to understand it. Finishing of eachother's sentences appears to be a common event with a Juton

Origin of name: The first Juton was suspected to be a Jude/Anton couple, thus their names were formed together much like celebrity couples.