Sigil Cant

In the city of Sigil, a complex lexicon has developed that, to the unobservant outsider (or clueless berk, as the locals would say) might seem bemusing. Lucky for those new to the Cage, there are those within the multiverse who have done the hardwork of cataloguing the meaning of various common slang terms so as to provide a window into the enigmatic goings on of the city.
To read through a complete dictionary of the common parlance of the city of Sigil, check out the Mimir.