outside jelly 

"outside jelly" refers to a vehicle having a candy colored paint job. The vehicles candy paint exterior has a slight resemblance to the coloration of jelly/jam (preserves).

Inside Peanut Buttah, Outside Jelly.
Outside Grape Jelly. (Referring to a purple candy paint.)

outside jelly by eXentric July 17, 2006

inside peanut butter outside jelly

"inside peanut butter outside jelly" refers to having a tan/brown leather or plush interior in your vehicle, with a (metallic)candy paint job on the exterior. (These color schemes are commonly used on Lowriders or American Muscle Cars, such as Cheverolets.)

Inside peanut butter outside jelly
7 days of the week 7 different chevys
Black SS wit tha top blown off
f*** with them boys get ya top blown off

inside peanut butter outside jelly by eXentric July 17, 2006