Yes! I used to have a regular innie, not particularly deep but certainly an indent. Then I gained a LOT of weight... FAST... and much of it was hard visceral fat. Even at my highest weight of 660 and my current weight of about 558, which I'm maintaining, I have a very big protruding belly that's super firm for someone my size, particularly a woman. In one year, when I gained more than 200 pounds and added a discproprtionate 25 inches to my waistline, my belly button completely flattened out. Then a small bump started to protrude inside a ring that's about an inch and a half in diameter. When I was still doing major stuffings, I'd feel a little pinch in that area when I got extra swollen. I'm not sure I have words to describe the sensation, but I did enjoy it as a sign I was totally engorged.
2 days