blink
Explanation
The comic depicts a biblical-era scene with two figures observing a baby (implied to be the infant Jesus) who is "walking backward, on all fours, and rotating its head in circles." One observer asks, "Why does he never blink?" The caption reads: "Days into his Incarnation, Jesus nearly ruined everything by not knowing how to operate a human body."
The joke plays on the Christian theological concept of the Incarnation -- God becoming human in the form of Jesus Christ. The comic takes this doctrine literally and imagines the practical difficulties: if an omnipotent, omniscient divine being suddenly found itself inside an infant human body, it would have no experience with the mechanics of being human. The result is a baby moving in deeply unsettling, horror-movie fashion -- crawling backward, rotating its head, and never blinking -- because the divine consciousness inside doesn't yet understand how human bodies are supposed to work.
The humor draws on the visual language of horror films (particularly demonic possession movies like The Exorcist, where head rotation and unnatural movement are hallmarks of the possessed) and applies it ironically to the most sacred figure in Christianity. The additional layer of comedy is that the witnesses are disturbed but not yet aware that this is supposed to be the Messiah -- they just see a profoundly creepy baby. The comic finds a clever absurdist angle on the Incarnation by asking a question theology tends to skip over: what would the learning curve actually look like?