The caught in 4K meme is actually a gif of a dude trying to sneak a picture of you with a huge camera, when he’s taking the picture the camera flashes.
Here’s the caught in 4K meme.
And here’s the caught in 4K gif.
The caught in 4k gif is somewhat creepy as the guy seems to try and sneak a picture of someone without their permission, but why not have a picture of you in 4k?