Honolulu's (as well as the rest of Hawaii's) area code is 808. People will sometimes say "representin' the 808" to identify themselves as Hawaiians.
A style of housing dating back to the 17th century, similar to a town home; very common in the older parts of D.C.
Literally, "Is it not so?", a slurring of "ain't it, hey?". May be used after a statement of fact when one expects a response, reply, or nod of acknowledgement. Ex: "Dem Brewers is doin' good dis year, aina hey?".
A popular--and relatively new--nickname for the city of Houston, which refers to “chopped and screwed,” an authentically Houston style of music.