Don't be a sucker - do your homework before investing.
Tips
culture
Originally stock market slang: institutional investors 'harvest' retail investors who blindly follow trends. Now used broadly for any scheme that repeatedly exploits uninformed people - crypto scams, overpriced courses, predatory apps.
memory
Leeks regrow after being cut - just like gullible people who keep falling for the same tricks. Picture a farmer happily cutting the same leek patch over and over.