When someone suddenly yells "reported!" or "I will report you!" or something like that, I usually respond in laughter and say "sure, go ahead!". The response is usually like "what? " because they think you actually care about the reports. If the response is negative again, I usually reply: "Whiners will be reported 4 times!" with all 4 characters at the same time. That usually scares them and makes them say "just kidding m8!". Then I start being friendly again.