Another Comic Book Reference
If you’ve watched every Rick and Morty episode, you must remember the one with the vats of acid, titled “The Vat of Acid Episode.” Rick had the brilliant idea of pretending to jump into large vats of “acid” in order to convince a formidable gang he and Morty were dead. They meet in a room with several large vats filled with a bright, green, bubbling liquid.
This is another tribute to a popular comic book, although this time from the DC universe. There’s an iconic scene in the Batman comic books taking place in Gotham City’s Ace Chemical Processing Plant, which features large vats of green, bubbling liquid – very much like the ones in Rick and Morty.