What is the definition of Mailman Research?

"Mailman research" is a rather peculiar term that humorously refers to a type of study conducted by mail carriers, who essentially deliver not just letters and packages, but also research materials, surveys, or even unsolicited data collection. It's like the mailman is a modern-day spooky Victorian-era spy, sneaking into your inbox and delivering a package of curiosity—or maybe just a bunch of spam.

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Here's an edgy example sentence: "As the mailman's research revealed, the universe is a lot more lonely than I thought, but I still manage to find a silver lining in every delivery."