windfall profit (noun)

1. In the cartoon, the main character discovers a hidden treasure and makes a windfall profit by selling it.

2. During the gold rush in California, many people made windfall profits by finding large amounts of gold.

3. Why did the comedian invest in a pineapple plantation? He hoped to make a windfall profit from the rising demand for pineapples.

4. In the anime series, the protagonist stumbles upon a rare item that he sells for a windfall profit.