Cheerios aren't supposed to clog the pipes but if they do my first suggestion would be to eliminate them from your diet until everything gets rolling again. Constipation is often alleviated with some lifestyle changes such as ensuring water consumption of 8 cups per day, eating fresh fruits and vegetables, and exercise. These changes will help prevent future bouts of constipation but to get the ball rolling you could try non-prescription laxatives such as Milk of Magnesia, Dulcolax, Bisacodyl, and Benefiber all found at your local pharmacy. Poop FTW! Freddy J