A gutsy attempt at completing some ill-advised feat of physical dexterity. While the attempt will most likely ultimately end in complete and utter failure (with the participant on his/her back, feet and arms in the air, like a TURTLE turned upside down), the fact that the feat was attempted in the first place will be celebrated.

What makes it a TURTLE-MOVE is an extremely low chance of success and an almost assuredly high rate of personal injury.

When you eat dirt for the first time and leave your family to build a shack in the woods