"J.J. (Abrams) gave all of us a packet of 70s slang words, like, 'Can you dig it?' And this one my mom was laughing at me because I didn't know what it meant - 'Goodnight John-Boy', 'Be there or be square', and 'Gag me with a spoon'." Teenage actress Elle Fanning had to be schooled in 1970s-speak so she could play a 1979 kid in new movie Super 8. Goodnight John-Boy is a reference to hit 1970s show The Waltons.