The strawman theory is a made-up idea that some people believe is true. It says that the government put in place a system that creates a separate "fake" version of you, called a strawman. The strawman is its own separate legal entity, and it has its own name written differently to yours. This strawman has a bank account connected to it, and you can supposedly access money in this account.
Many people believe this theory is real, but it's not. It's just made up - like believing in Santa Claus or the tooth fairy. It's important to remember that the government does not create your own personal strawman for you, and you can't access any money from this fake account.