Chemicals
Explanation
This comic depicts a person lying in bed at 3 AM, unable to sleep, complaining to their own brain (drawn as a literal cartoon brain sitting on the pillow): "God, it's 3AM and my stupid brain chemicals won't just let me sleep!"
The brain fires back: "You were up until 12:50 reading internet memes and vacuous political commentary and now you're blaming your insomnia on chemistry?"
The person responds indignantly: "How dare you."
The joke is about the common tendency to blame sleeplessness on neurochemistry or medical conditions ("my brain chemicals") when the actual cause is self-inflicted -- staying up late doomscrolling or browsing the internet. The person's outraged "How dare you" in the final panel is funny because it treats an entirely accurate and reasonable observation as an offensive personal attack. It satirizes how people externalize responsibility for their own bad habits by framing them in clinical or scientific language.