if something that you eat sticks to your ribs, it makes you feel you have eaten a lot.
That chocolate pudding really sticks to your ribs.
stick to the/(one's) ribs
Of food, to be hearty and sustaining. I'm sick of eating nothing but fruit and vegetables—give me something that will stick to the ribs.Have a bowl of my famous chili, it will stick to your ribs in this cold weather.