An alternate function for the "PokeWalker" device bundled with the new Pokemon "HeartGold" and "SoulSilver" games.
The device is a pedometer, which rewards players in proportion to the number of steps they take. Its counting function may be accelerated by rapid masturbational movements of the hand.
Caution must be taken, as prolonged auto-erotic contact of this kind may lead to contraction of the Pokerus virus, which essentially makes your dick level up faster.
Defined by a Filipino host of Eat Bulaga (the most famous noon-time show in the Philippines) as "Aswang" or a Vampire like creature in Filipino Mythology