When Wednesday is in the coffee shop, she rings the bell to get Tyler's attention. When he arrives, he says "You rang?", a common phrase said by Lurch in previous Addams Family movies and TV series.
Wednesday's "paraphrase" of Agatha Christie comes from three sources. "Any coincidence is worth noticing. You can throw it away later if it is only a coincidence." (Nemesis) "It's not impossible my dear. It's just a very remarkable coincidence-and remarkable coincidences do happen." (Sleeping Murder) "It is the same motif three times repeated. That cannot be coincidence." (The A.B.C. Murders)
Weems suggests that Wednesday play an uplifting Fleetwood Mac medley on her cello, to which Wednesday replies "as long as you promise to hang me as a witch afterward." This references Stevie Nicks' theatrical performances and persona and in particular, her song "Rhiannon", often introduced as "a song about an old Welsh witch."
The antique shop is named Uriah's Heap after a character from Charles Dickens' "David Copperfield", as was the English rock band Uriah Heep.
The foot sweep Wednesday does when dealing with the bullies is called De Ashi Harai (judo).