Michael Saylor, founder of business intelligence firm Strategy, has taken to the X social media network to share an unorthodox piece of financial advice. Saylor has jokingly urged investors to sell their teeth in order to keep their Bitcoin untouched. "Sell a tooth if you must, but keep the bitcoin," the billionaire quipped. The facetious remark is a reference to a recent interview with the Financial Times, during which Katie Martin, a member of the newspaper's board, ridiculously compared the scarcity of her teeth to the scarcity of Bitcoin. "My teeth are scarce, but they’re not worth billions of dollars," Martin said, taking a jab at Bitcoin maximalists. The comment went viral on X, with many members of the community ruthlessly mocking the ridiculous comparison and producing plenty of memes. Stack bitcoin, not teeth pic.twitter.com/AqwVZDih9z — Relai 🇨🇭 (@relai_app) May 15, 2025 Some have pointed out that teeth can be replaced with implants or even 3D-printed substitutes. Obviously, one cannot invest in a tooth ETF either. To put Bitcoin’s scarcity into perspective:⁰There are only 21 million Bitcoin but 256 billion human teeth for 8 billion people.⁰If teeth were as scarce as Bitcoin, there’d be just 1 tooth for every 380 people.Bitcoin is true scarcity. pic.twitter.com/Ys3dNfl6xn — Simple Mining (@simpleminingio) May 15, 2025 On the other hand, Bitcoin's scarcity is mathematically capped at 21 million tokens, meaning that the cryptocurrency's scarcity is absolute.