A boy (red=1) reaches toward a patch of nettles (green=3) in a garden. In the first grid, the boy gingerly touches one nettle — the contact cell shows orange=6 representing the sting. In the masked grid, the boy grasps the nettles firmly (all nettle cells change from 3 to 2, representing them being crushed), and the sting effect disappears (no orange). The moral: grasp nettles boldly and they lose their sting.