apologize
Explanation
The Joke
The single-panel comic shows a scene at the gates of heaven. A figure (presumably Saint Peter or a similar gatekeeper) addresses a newly deceased person at a podium, telling them: "Before entering heaven, you have to personally apologize to every gamete you didn't use." Behind the deceased stands a massive, rowdy crowd of personified gametes -- sperm and egg cells -- cheering, waving their arms, and looking expectant.
The Humor
The joke operates on the intersection of religious afterlife concepts and reproductive biology. Humans produce an enormous number of gametes over their lifetime -- men produce hundreds of billions of sperm cells, while women are born with roughly one to two million egg cells. The vast majority of these never result in a fertilized embryo, let alone a person.
The absurdity comes from applying a moral framework of personal accountability to a biological process that is entirely involuntary and astronomically large in scale. The idea that you would need to personally apologize to each unused gamete -- as though each one had feelings and a grievance -- is both logistically impossible and philosophically ridiculous.
The comic also plays on pro-life arguments taken to their most extreme logical conclusion: if the moral status of potential life is extended all the way back to individual gametes rather than just fertilized embryos, the moral burden becomes comically infinite. The crowd of aggrieved gametes waiting for their apology adds visual comedy, depicting them as an angry mob at what should be a solemn heavenly proceeding. The sheer number of them -- visible as a packed, cheering audience -- drives home the impossibility of the task.