This is my student Erin's idea, but it's so funny I wanted to share it more broadly:
Great dinosaur cartoon about vandalism and Wikipedia. The dinosaurs want to take over the chicken entry in Wikipedia and vandalize it -- that way, all other Wikipedia entries will be safe, and hey, everyone already knows about chickens, so it's ok to vandalize that entry.
Erin also points us to the actual Wikipedia entry for chickens, which suggests that perhaps dinosaurs *have* visited the Wikipedia chicken entry after all.
Definitely a great teaching moment.