evolved
Explanation
The Joke
The comic opens with a group of fish mocking one of their own -- "Frank the Freak" -- who is migrating from the water onto land. Frank defiantly responds: "I'll show you! I'll evolve a bunch and then you'll see." The other fish dismiss him with "Sure thing, freak!" A time card then reads "Three million generations later..." and we see a modern human man sitting at a table eating a plate of fish, looking vaguely troubled as he wonders: "Why does eating fish make me feel so powerful?"
The joke is that Frank's ancient vow of revenge has been fulfilled -- his descendants (humans) now eat the descendants of the fish who bullied him. The human feels inexplicably "powerful" while eating fish, as though some deep ancestral grudge is being satisfied across millions of years of evolution, even though the human has no conscious memory of why.
The Humor
The comedy comes from the absurd anthropomorphization of evolutionary history as a personal vendetta. Evolution, of course, has no goals or grudges -- it is a blind process. But the comic reimagines the fish-to-land transition as a revenge story, where the weird fish who crawled onto land eventually spawned a species that dominates and eats its former peers. The lingering, unexplained feeling of "power" the human gets from eating fish serves as the punchline -- a vestigial emotional echo of an ancient grudge that has been passed down through hundreds of millions of years of evolution.