Mark Zuckerberg marked turning 40 this week by channeling his inner Eminem, squeezing into recreations of his old bedrooms, and hanging out with Bill Gates.
The Meta CEO isn't the first billionaire to celebrate his birthday with a lavish — albeit slightly bizarre — party.
The ultrawealthy's penchant for the weird and wild was even parodied several times on HBO drama "Succession," most notably in a season three episode where Jeremy Strong's Kendall Roy hosts an over-the-top bash featuring an enormous replica of his mother's birth canal and a kids-only version of the Wu-Tang Clan.
From Zuckerberg to Jeff Bezos and Elon Musk, here are a few examples of how some of the world's richest people celebrate their special day.