“Caught in 4K” is a slang/meme term used when talking about a person or people who’ve been caught in the act of doing something nefarious, private, embarrassing, or illegal. 4K refers to the high resolution of the image that may or may not have been captured of the subject(s) in the act, revealing everything in undeniable detail.

There are many tags related to caught, so tag those as needed for the specific situation.