Emmett Brown and Marty McFly see the poster for the Enchantment Under the Sea dance at Hill Valley High School.

Square was a slang term used in 1955 to describe someone who was untrendy or 'not with it'.


The term appeared on the poster for the Enchantment Under the Sea dance seen by Emmett Brown and Marty McFly at Hill Valley High School on November 12, which urged students to “Be There... or Be Square!”

After Marty told Lorraine it's not right to drink, Lorraine said, "Marty, don't be such a square. Everybody who's anybody drinks."

In 1986B, the Jennifer Parker of this timeline, a punk girl who regularly broke the rules, dumped an alternate version of Marty because he wasn't good at playing guitar and followed the rules — making him a 'square'.


See also

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