invisible
Explanation
The comic plays on the idea that carrying a baby functions as a kind of social invisibility cloak, but in reverse — it makes you hyper-visible and above suspicion.
In the first panel, a character explains that they love the way the world treats you when you have a baby. A single person walking alone in certain places might seem suspicious or be met with hostility, but carrying a baby in those same places makes you seem wholesome and trustworthy. In the second panel, they describe putting a baby in various locations — like vendors and stores — and note that nobody questions what you're up to when you're holding a baby.
The final panel delivers the punchline: a police officer tells the person "Sir, you are under arrest for kidnapping," and the character responds with "I shatter!" (or a similar exclamation of surprise). The joke is that the person has been using a baby as a prop to avoid suspicion in various situations, but the baby itself was stolen — the very act meant to provide cover is itself the crime.
The humor mechanism is a classic bait-and-switch. The setup leads us to believe the character is making an innocent observation about how society treats parents more favorably than single adults (which is a real social phenomenon — parents with children are perceived as more trustworthy and less threatening). But the punchline reveals that the character has taken this insight to its criminal extreme: kidnapping a baby specifically to exploit the social trust it confers. The word "shatter" (or the character's shock) at the end underscores the comic absurdity — the character is genuinely surprised that their scheme didn't work, despite it being obviously criminal.