Swampland in Florida is a figure of speech referring to real estate scams in which a seller misrepresents unusable swampland as developable property. These types of unseen property scams became widely known in the United States in the 20th century, and the phrase is often used metaphorically for any scam that misrepresents what is being sold. Expressions like "If you believe that, then I have swampland in Florida to sell you", suggests the recipient is gullible enough to fall for an obvious fraud. Similar phrases involve "selling" the Brooklyn Bridge or nonexistent "oceanfront property in Arizona".