Kitty says that at her bachelorette party, her friend, Gloria, gave Kitty her first sip of hard cider, implying that was her first time ever drinking alcohol. However, in the episode "Backstage Pass" (s3e24), when Kitty and Red are recounting how they both met, Kitty was drunk at a USO dance.
When they all cram inside the trailer, it's considerably smaller inside than it should be, given the size of the outside. It's less than half the length inside than it should be.
A bunch of '70s high schoolers wouldn't have known the lyrics, if even the tune, of ""The Good Ship Lollipop".
Hyde says he and Jackie have never paid to get into Six Flags because she would tie her blouse in a knot. The nearest Six Flags in the 1970s was in St. Louis.