In the show, Dr Bus has a scene where he claims that swans sing before dieing and thus the term "swan song" came to be. I shared this fact and was made to look a FOOL because swans do not actually sing when they die and the idiom is based on greek mythology. Honestly, if the HBO writers couldn't get this right, it's no wonder they butchered basically every character in the show. If my father in law is able to Google a fact in two seconds during our Thanksgiving dinner that makes me look like an idiot, HBO should be able to damn well get it right. Give it a pass