Meaning of "Investing with borrowed money"

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Investing with borrowed money빚투#사회/이슈#밈/유행어2010s Meme

The act of publicly exposing or bringing up a debt owed to another person or a debt-related matter, or the term used to describe such social or online reactions

"As the controversy surrounding that celebrity’s debt-fueled investments grew, attention turned once again to their past financial obligations."