quantum-bits
Explanation
The Joke
A woman explains to a group that "according to that theory, the entire cosmos -- everything -- is made of quantum bits." Someone asks a follow-up: "Wait, so when I went inside that video game computer, isn't that a quantum computer?" The response is "It's even more basic than that." The explanation continues: if everything is quantum bits, then you are a quantum computer that got complex enough to build another quantum computer that got converted into a quantum computer. This recursive logic causes one listener to exclaim in awe, but the scene cuts to a mundane punchline: "By the way, your quantum toilet won't flush." Someone responds, "For God's sake, Dave."
The comic satirizes the popular science trend of slapping "quantum" in front of everything. If the universe is fundamentally quantum mechanical, then technically everything is quantum -- your computer, your toilet, your sandwich. The comic takes this reductio ad absurdum to its logical conclusion: if everything is quantum, then calling anything "quantum" is meaningless.
The Humor
The humor builds through escalating absurdity. The philosophical discussion about quantum bits composing reality sounds impressive and mind-expanding, complete with a dramatic starfield backdrop as the characters contemplate the cosmos. But the punchline deflates all that grandeur by applying the same logic to a broken toilet. If everything is quantum, then a clogged toilet is a quantum plumbing emergency. The name "Dave" adds to the bathos -- after this cosmic revelation, we are back to nagging a roommate about basic household maintenance.
References
The comic references the "it from bit" hypothesis, associated with physicist John Archibald Wheeler, and more recent proposals in digital physics and quantum information theory that suggest the universe is fundamentally composed of information or quantum bits (qubits). These ideas have been popularized by physicists like Seth Lloyd and Max Tegmark.