Back when Hamilton was just a rap musical about the founding fathers that nobody knew what to think of, Andrea Martin got Lin-Manuel Miranda to write a rap just for her, or rather for Edith Prickley, one of Martin’s most famous characters on SCTV. After a bit of pretending that she couldn’t really remember the words, Martin broke into the rap for Seth Meyers last night, proving a fundamental axiom of showbiz: Never doubt Andrea Martin.