Unless the parent complains to TV news, who get B-roll of the McDonald's playground and Disney and other symbols of American childhood wholesomeness, and spin a narrative about some cyber-predator using computer hackery to reach out and traumatize children. A predator who apparently was physically at the location, possibly returning frequently to observe reactions to their prank, and who knows what all their intentions. Then they might become a priority to catch.
But my point wasn't that they'd get caught, but that those who were only (non-sociopath) pranksters would feel bad, when they started to realize that pranks can have serious unintended effects for themselves and others. Few teens would intentionally show goatse to a young child. The prankster just didn't think this one through, past "wouldn't it be funny if someone saw goatse due to a clever hack of mine", past the misdirected teen impulses to stir things up.
But my point wasn't that they'd get caught, but that those who were only (non-sociopath) pranksters would feel bad, when they started to realize that pranks can have serious unintended effects for themselves and others. Few teens would intentionally show goatse to a young child. The prankster just didn't think this one through, past "wouldn't it be funny if someone saw goatse due to a clever hack of mine", past the misdirected teen impulses to stir things up.