Instead of fearing foods based on how they may or may not make my belly protrude, my belly and I prefer to focus on the very real health risks of overdoing it on the highly-processed, highly-unnatural ingredients we call food.
If you're looking to get rock-hard abs, remember that proper dietary choices is your first step, but from there a comprehensive fitness program and targeted ab exercises will help you achieve your goal.
Our popular culture acts as if it would make sense to optimize one wing of a plane. The plane is either fit to fly -- or not. You can't fly half a plane. Selectively cultivating the health of favored organs or body parts is a comparable flight of fancy.