Grip is a mechanic in the game that allows the bread to hold on to an object/wall for a limited time.
Edibility is a mechanic in the game that makes so that you can stay on floor for a limited time (excluding the skateboard). Other things that affect your edibility are fish bones, ants, water, litter, etc.
There is a glitch in the game that allows you to get to -00.1 edibility.
Deliciousness is a mechanic in the game that gives extra points and decorates your bread. Delicious decorations are: Butter, Jelly, Lettuce, etc. These decorations also give special effects, such as Butter making you slide and Jelly making you sticky.
Time is a mechanic in the game that tells you how long you have been playing a certain level.