three
Explanation
This comic features aliens discussing human biology and attractiveness. An alien says "Steve! Behold! We have created this ideal female!" and another asks "Wait, why does she have three boobs?" The response: "Because three is bigger than two."
Another alien objects: "That's not how this works. You can adjust up or down within a range of values, but you can't make a fundamental body plan change. That's perceived as uncanny and weird."
The first alien concedes they "may have been misled by another part of the human breeding program." In the final panel, the aliens present a bizarre muscular male figure, saying "We have created this guy with two gooses!" and another responds with just "Voodoo!"
The comic satirizes the logic behind exaggerated physical features in science fiction — most notably the three-breasted woman from the movie Total Recall. The alien's reasoning ("three is bigger than two") is a hilariously reductive misunderstanding of human attraction. The other alien's correction — that attractiveness works within a range of existing human parameters, and that fundamental body plan changes are just "uncanny" — is actually a decent summary of real evolutionary psychology about attraction. The final panel extends the absurdity by applying the same flawed "more is better" logic to a male figure, demonstrating the ridiculousness of the premise when applied universally.