"Oi gitz, how do you use this zoggin' interwarp?!"
"You'ze already usin' the interwarp, ya grot!"Gork & Mork are the Gods of the Orks. Gork is cunningly brutal (will hit you when your looking), while Mork is brutally cunning (will hit you when your not looking).
Official Canon Edit
Gork and Mork came into being when the Orks had enough collective psychic power to manifest in the Warp, in a similar way to the Eldar gods. The difference is that the Orks can actively call upon help from their Gods, building great tributes to them and being imbued with their power. Gork is favored by the common Ork for his directness and brutality, while more ambitious Ork commanders favor Mork to grant them the cunning they need to overcome enemies and rival Orks.