They say that love flies out the window when poverty comes in the door, but people generally get the sense backwards. It doesn't mean that when a man's money runs out he's shaken off by women. When he runs out of money, he naturally is in the dumps. He's no good for anything. The strength goes out of his laugh, he becomes strangely soured. Finally, in desperation, he shakes off the woman. The proverb means that when a man becomes half-mad, he will shake and shake and shake until he's free of a woman.