Once a gummy bear or similar candy has been bitten and dropped on the floor it is liable to pick up dust and other foreign objects on the sticky area where it has been bitten. Gummy shave is the process of eating as much of the remaining gummy candy without eating the affected area.
"Damn, I dropped my gummy bear and now it's covered in icky stuff. Guess I'll have to gummy shave."
av aled from the hills 2 september 2009