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!
Memes have often been ripoffs of copyrighted material anyway, so I think making silly jokes that can’t be profited from is the one of the most “ethical” uses for AI that you’re gonna find.
For “real” art, however you choose to define that, nothing will ever beat a genuine, human artist. Period.
For memes, I don’t care where the images come from. The art is in the humor, the combination of text plus imagery, and only a person is going to get that right. I don’t know if that answers your question, but those are my thoughts on the subject.