兽穷则啮

Explanation: Must be that desperate fight beasts bite counterattack. Metaphorical and also into the realm of embarrassment, they will strive to fight back. 　　Source: "Hanshiwaizhuan" Volume II of the poor beast is gnawing, the birds were pecking at the poor, poor people are fraud. Since ancient times and today, under which the poor can not risk who are not of too. " 　　Examples: ~, Then rape seedling stands for Zhu Ke Min, complex old haunt, the base camp to kill people respond to carry on war. ★ Qing Wei, "Sheng Wu mind" VII