(就算再不济，)至少你也得经常刷刷牙。

As an absolute minimum, always brush your teeth.

男人都会煎牛排；再不济縂还能吃鸡蛋和面包黄油。

Men can broil a steak; and there are always eggs and bread-and-butter.

当你遭遇失败或者一些始料未及的事，你可以把它当作“替罪羔羊”，声称你的失败是命运不济所致，如若不然，你怎么可能会失败呢？

Whenever you fail in some endeavor or whenever something happens which is not in accordance of your wish, you use it as a convenient scapegoat. You say, it was your bad luck which caused you to fail.