Marginal Cost of Lurking
Explanation
This comic applies economic and market theory to the idea of monsters under the bed. A child tells their parent there's a monster under the bed, and the parent -- wearing glasses and speaking like an economist -- says "that's not possible" because it would violate the Efficient Market Hypothesis.
The parent's argument is that if monsters' time is valuable, it wouldn't make sense for them to spend all of it lurking under one child's bed. They could diversify, visiting a variety of homes and "catering to the needs of monsters in exchange for their golden honey." The parent essentially argues that a rational monster would optimize its lurking portfolio rather than camping under a single bed.
The punchline is the child using the same economic logic back: "You can survive the night, but whatever you do, don't open your eyes, you'll lower your property values." The comic satirizes how economists explain away real fears with theoretical models, and how economic reasoning, taken to its logical conclusion, can make even supernatural threats sound like a market inefficiency. The title "Marginal Cost of Lurking" itself is a parody of economic jargon.