These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Big Lipped Alligator Moment: The fifth episode begins with Thelma having a dream/vision of a decadent 1920s party, with women snogging each other and the school's headmaster crooning on stage.