While cave diving is already a high-risk hobby, the meme takes it a step further—exaggerating the reckless determination of divers to fit into ever-smaller crevices. Inspired by real-life cave ...

How a cave diver checks their oil: I'm sure you get the idea. The meme spread because it's easy to do, and it's funny, but it's partly based on a photo taken of the boots of John Edward Jones ...