«اِلضِّحْكْ عَلَى الْهِبْلْ صِيفَهْ»

The saying holds that a simple-minded person is an easy source of profit for anyone willing to lie. Here 'laughing at' means duping with lies to take what they have, not mocking. Tricking them pays off like a trip through the fields, gathering a little here and there with little effort.

In practice it records the trickster's view of the gullible as ready plunder; it is an observation, not an endorsement. Speakers use it to expose that exploitation, to warn the naive to guard what they own, or to remark that cunning people keep finding victims among the credulous.

Use it to comment wryly on a con artist who targets naive people, or to warn someone gullible that tricksters see them as easy pickings. It describes a predatory attitude, not advice. It suits informal talk and should not be addressed approvingly to the deceiver.