Gully is a Cant term referring to a potential victim of a Peel. Gullies are suckers, rubes, gullible sods. The word is related to Gully Dwarves, a race from Krynn.
Source: The Planewalker's Handbook
At least with tieflings you can sure, that sooner or later they'll stab you in the back.
— Mirlus Semperhar
