Altered states of consciousness are portals to multiple worlds. Many of these worlds are populated by sentient entities: gods; demons; plant teachers and animal spirits; Terence McKenna's machine elves. What forms of language are being used to communicate in these "Antipodes of the Mind?" Is language itself evolving in the psychedelic sphere? The Sundance Kid kept asking, "Who are those guys anyway?" The Xenolinguist wants to know what 'they' are trying to tell us.