Bidet : nm arg. Belly. To have/take flab: to have a big belly
To settle down: to eat.
Get your stomach full; to fill the belly; to go full belly: eat or drink to your drunk.
Going crazy: overeating.
To have a stomach like a poster: to have an empty stomach, to be hungry.
Be full of it: be courageous, vigorous, have resources, abilities, energy.
He has nothing in his gut: he's a coward.
It's bogus: it's false, it's a bluff.
Fail: a failure, a failure, a flop, a fiasco.