BG - Stands for background.
Brushing - The creation of body parts from scratch using the airbrush tool (see tools section).
C&C - Comments and Criticism.
C/P - Abbreviation for Copy and Paste.
Chop - A digitally modified car image.
Chopping - Another name for the art of digital modifying. Probably derived from the term Photoshoping.
Donor Car - A good image, which is used to copy and paste from, onto your WIP.
HOF - Hall of Fame (elite section on the forum where cars are nominated to be posted).
Lowering - Making the car lower to the ground. If you're chavy, "Slamming".
Rims - Alloy Wheels.
Roof Chop - Lowering the roof so the car has an overall shorter profile.
Scissor doors - Doors that open at a 45degree angle.
Smoothing - The removal of excess parts such as door handles and badges.
Suicide doors - Doors which open the reverse direction to the norm.
Tuts - Shortened down word for tutorials.
Van conversion - Adding body panels over the rear windows to give it a van look.
WIP - Work In Progress, cars that are currently in Photoshop getting the treatment.