I found this: https://www.businessinsider.com/what-is-a-trust-fund-baby-2018-6

"So yes, a trust-fund baby is a person whose parents set up a trust fund for them so they don't have to worry about where their rent money is coming from. They often have the security of reliable income to live on, but they may not live an outwardly lavish life or have the sense of superiority you think they do — and many even have jobs.

The allergic-to-work trust-fund baby is a stereotype, and likely not the norm."