Dr. Stone realizes that Mother Box was taken by Cyborg, then he was startled by a Parademon which landed behind him. The scene cuts to Gotham Police Department, where Commissioner Gordon receives a bundles of messages from a female officer, then walks side-by-side with Detective Crispus Allen:
Commissioner Gordon: Don't have to see the sky to know it's a full moon.
Crispus Allen: Half of Gotham's reality-challenged community showed up. Say they saw flying monsters by the harbor.
Commissioner Gordon: You were right, Ma. Police Academy. What's wrong with dental school?
Why did Commissioner Gordon say this line: "Don't have to see the sky to know it's a full moon"...?