Endonesia would be the full name of the shortened Endo. Endonesia is the same as marijuana. The word Endonesia has been used in songs by the late East Coast rapper, Nororious B.I.G. I don't remember exactly which song Endonesia is mentioned in, be cause I am high on Endonesia.
I am high on endonesia. Damn, this endonesia is dank!