Entertainment True Facts on Instagram: "The “insists upon itself” line in the #FamilyGuy episode “Untitled Griffin Family History” has become a fan favorite among fans, but where did the whacky line originate from? #SethMacFarlane says that the line originated from a professor of his explaining why he didn’t like #TheSoundOfMusic. MacFarlane says, “‘It insists upon itself’was a criticism my college film history professor used to explain why he didn’t think The Sound of Music was a great film. Fi