I try to keep this blog on my self-imposed straightjacket of food but since language is my bread and butter (no really), I thought this on Farsi street slang worth a link.
Farsi is the language of Iran (and Afghanistan- though called Dari) and I should comment on how the distinctions between formal and slang are used coercively in all cultures and that slang is often a response to some form of oppression but will have to defer to the book's editor Fereydoon Fatemi "It's just really funny".
More cultural eye opening can be had here at Persian Slang . Excellent Language Log , which often has me runing to my copy of Swan, crashes the party – scroll down to "Just as Good for Hate" for a pessimistic backhanded compliment on the adaptability of language