battriangulation
Explanation
This comic uses Batman's crime-fighting methodology to make a joke about the real-world usefulness of mathematics, specifically trigonometry and triangulation.
The comic opens with Commissioner Gordon and Robin in a scene familiar from Batman lore. Commissioner Gordon has put up the Bat-Signal, and Batman arrives. The setup involves Batman explaining how he found the signal: through mathematical triangulation. By repeatedly measuring the time to arrival, they can get "an excellent estimate of your distance." He then explains that he only needed to know the direction, "which is easily discovered by launching the helicopter's approach vector."
Robin and Batman discuss using increasingly complex math: "But wait, caped crusader! We'll have to start using more complex..." Batman acknowledges: "Yes, Boy Wonder, but we'll also have to address the long-term problem." The title "battriangulation" is a portmanteau of "bat" and "triangulation," referring to the mathematical technique of determining location by measuring angles from known points.
The punchline comes in the final panel, which shows a newspaper headline from the Gotham Gazette: "BRUCE WAYNE WITHDRAWS FUNDING FOR AFTER-SCHOOL MATH" with the subheadline "'It's not useful in real life.'" This is deeply ironic because Batman -- who IS Bruce Wayne -- has just demonstrated that math is extremely useful in real life (his real life of crime-fighting). The joke is that Bruce Wayne publicly dismisses the very skills that make his secret identity effective.
The comic also satirizes the common complaint that math (especially trigonometry) is "not useful in real life." Batman is literally using triangulation to fight crime, which is about as practical an application as one could ask for. Yet his public persona perpetuates the myth that math is useless, presumably because if Gotham's youth learned trigonometry, they might figure out how to locate the Batcave. There is an additional layer of social commentary: wealthy philanthropists often make public pronouncements about education that contradict their own lived experience, and Bruce Wayne -- the ultimate example of a billionaire with a secret double life -- embodies this hypocrisy perfectly.