If there's one thing the best print ads have in common, it's that they're all double-take worthy. And that's certainly true of this example that's recently resurfaced on Reddit, where it's going down a storm.
The ad for Frontline flea treatment features, at first glance, a dog itching itself in an attempt to rid itself of dozens of tiny black fleas. But on closer inspection, it soon becomes clear that those aren't fleas... they're people.
