The “Community” tab on a game in your library or the store page, I forget which. It’s usually filled with guides, art, highlights, and a heavy dose of shiposting (often in the form of fake guides). Have not encountered posts OP is referring to, but I don’t really go on there much.
Tbf i think it’s because he’s at the apex of his jump (like 6in off the ground lol) so the gut kind of shifted up as he came back down. Doesn’t make the image any less absurd, but it came to mind when I didn’t even recognize the dude. I think the same thing is happening to his jowls in the photo. Either way the man-child is ridiculous. And so is the other one.