It's probably a bad case of constipation. How many times out the week does he take a shit? If it isn't at least 4 days, he needs to get more fiber in his diet. Just tell him to start off slow to get his system used to it ,and he doesn't have a lot gas that may hurt. I explained the rest in my previous post. Tell him good luck.
all us transplants have automatic shit counters hooked up to data central. if even a gram of the wrong color comes out they send the med evac chopper!