The 'Hello, Neighbor' meme is based on the popular stealth horror game where a player tries to uncover the dark secrets hidden in their neighbor's basement. The meme usually features the antagonist, Mr. Peterson, whose uncanny ability to track the player and his unsettling, mustachioed appearance became instant fodder for internet humor. It is commonly used to represent unwanted intrusions, the feeling of being watched, or situations where someone is being overly nosy. Whether it's a literal neighbor or a personification of life's many stresses lurking just outside your door, this meme perfectly captures the blend of tension and absurdity found in the game's mechanics.