It sounds like you're discussing a cryptocurrency investment strategy! The idea of selling a portion of your holdings after a significant price increase (like 2x) to secure profits, while keeping a "moonbag" (a smaller amount you're comfortable holding long-term) for potential further gains, is a popular tactic among crypto traders. This approach helps in mitigating risks and ensuring you benefit from both short-term and long-term price movements. Remember, investing in cryptocurrencies involves significant risk, so it's essential to do thorough research and consider your risk tolerance before making decisions.