I can actually imagine this situation happening. Chronic opioid use with compulsive eating habits and dehydration leading to a complete bowel obstruction. User takes more opioids for the pain while continues his compulsive eating hoping he will eventually eat enough to help his intestines pass the blockage. Little does he know he as immobilized his GI tract and his colon ruptures and he is sent to the ER and must have a colostomy bag.
I think more potent opioids would be needed though for this to happen. Any opioid will slow GI movement, but high doses of codeine will undoubtedly lead to adverse reactions such as hives and other histamine complications that other opioids do not produce at large doses.