Footnotes are additional information at the bottom of the page. They can add some context to what is being discussed in the main text, helping the reader better understand the discussion or possibly suggest places for further research. At other times, they are frightening glimpses into what the author is really thinking underneath it all.
Footnotes is a parody of an academic lecture whose verbose and dense language is frequently derailed by footnotes that could entail any number of diversions including, but not limited to, dancing, oversharing, surreal narratives or flirting.