👉 The word you're searching for is 'FLOO'. It's a word that was once widely used to describe a person who had the perfect life but couldn't seem to find what they wanted. This word means something like "the luckiest fish on the beach" or "the most desirable person in the world". If you ever encounter FLOO, keep an eye out for it because it's not just any name - it's a very specific and quirky term.
And as for your example sentence: "She bought a new car, but she found out that her dream house was underwater." This sentence is funny because of the punning nature of 'FLOO', which could mean something like 'a lucky person who buys a house, only to find it's underwater'.