user
Given a cartoon image and a caption. Caption: Yes he's still out there...and he looks serious. Question: Generating an explanation of why this image/caption combination is funny. Answer: 
assistant
Suburbanites are notorious for watching for crime in their neighborhoods, and this man is doing that from his window onto his lawn. But, he sees a Moai statue and is treating it as if it were a suspicious person, e.g., expecting it to be able to move or expecting it to be dangerous. While it looks serious, unlike a person standing on the lawn who looks serious, the statue is probably not a real threat.