Pocky was some new secret word from around 2006 that meant "naughty underage sex". As most kinds of underage sex, pocky is an export of Japan. People who offer pocky are usually carriers of herpes. Hipsters like to buy Pocky because the cost is too high for them to get too fat and outgrow their skinny girl jeans.
Pocky actually comes in dozens of flavors, only a few of which are exported. Flavors which have yet to be exported are prawn, seaweed, and Godzilla.
In Europe they have a better kind of Pocky called Mikado.
