Is the neighbor a lonely elderly man desperate for community? Is he a passive-aggressive control freak weaponizing "friendliness"? Or, as the most popular theory on Reddit suggests, is this a satirical performance art piece about the erosion of personal boundaries in the post-pandemic world?

One thing is certain: With neighbor, we will never feel neutral about a casserole dish again.

The video cuts to a shot of a hand reaching over a fence to leave a casserole dish on a patio table, followed by a caption: "He says we must operate as a single economic unit. I moved here for privacy."

The social media discussion revealed that we have no shared vocabulary for what a "good neighbor" actually is anymore. Is it someone who waves from a distance? Or someone who merges recycling bins?

So, the next time you see a hand reach over a fence, ask yourself: Do you reach back? Or do you start recording?