To get beyond Eggleston's Freudian couch, swine also need a 2-inch-thick layer of exterior fat along the belly and back.

WSJ: High on the Hog

He looked depressed a lot, but he would laugh good, too, you know, the kind that he'd hold his belly and lean back and just crack up.

NPR: Remembering Army Pfc. Kenneth Zeigler

He lay on his armor-like back, and if he lifted his head a little he could see his brown belly, slightly domed and divided by arches into stiff segments.

WSJ: A.B. Yehoshua, Author of Mr. Mani, on the Limits of Imagination | Word Craft

Rather than flapping from back to belly, their wings are moving more like limbs reaching forward and scooping backward.

ECONOMIST: Birds that don't fly may be using their wings to run uphill

If an expat has a business and it goes belly-up, then they can walk away, go back home or to another country.

BBC: Expats see business boom in Mid East