What 蛋 is referring to in 完蛋了 蛋 is a nickname for 'testicle'; 完蛋 simply means "f~king finished" When a chicken stop laying egg, it is doomed and will be slaughtered soon When an egg (蛋) is finished (完), meaning an egg is broken, it is ruined beyond repair Which is the correct answer? If none of the above is correct, what is the correct explanation of 蛋 in 完蛋了