machine-love
Explanation
The Joke
A person asks a robot, "Can you teach me to love?" The robot responds seriously: "No. Machine love is not a product of physical urges. It's the hardest aspect of the human brain." The human replies, "Is that all? Just a gig?" seemingly dismissing the complexity. The robot then appears in front of a "BioReactor," and in a dramatic twist, declares: "Suddenly I want to see the genitals of everyone with a good personality." The human responds, "That's only like 90% of love!"
The comic plays with the idea of a robot trying to understand or replicate human love. The robot starts from a clinical, intellectual perspective, treating love as a computational problem. But when it tries to actually simulate love, it reduces the experience to its most base biological component -- sexual attraction to people with good personalities -- which the human points out is actually most of what love is anyway.
The Humor
The comedy comes from the deflation of the romantic ideal. The robot's attempt to understand love is initially framed as a profound intellectual challenge, but the punchline reveals that the human conception of love is itself not much more sophisticated than "wanting to see the genitals of nice people." The human's admission that this captures 90% of love is both the punchline and a wry commentary on how humans romanticize what is, at its core, a fairly simple biological drive combined with personality compatibility.