It's genetic and not that visible on most people. It's also not dangerous in any way as the muscles are still able to do their job just fine. As a result it doesn't get much attention.
You can still easily find examples though. If you for example go on DDG and search for images of "bodybuilder abs" you'll get stuff like what I got as result number 5, result number 6, result number 9 and more.
Some of the best memes feature terrible artwork and/or editing. AI slop is perfect for memes.
Edit: a lot of people have opinions about this one. They might be in favor of AI art and are annoyed that I called it “slop”, or they’re against AI art and mad that I dared suggest that it’s good for something. Either way, they sure hate my comment!