This meme originates from the well-known trope of Death depicted as a Grim Reaper figure knocking on doors, which has been a part of folklore and popular culture for centuries. The image of Death choosing which door to knock on has been comically illustrated in this meme format, where two doors are ominously open with blood seeping out, yet Death chooses to knock on the third, clean door. It's a visual metaphor for the unexpected and often unfair nature of problems or misfortunes, humorously implying that those who seem safest or least deserving are targeted by life’s unpredictabilities.