My wife (82) had an eye operation and subsequently appeared to have what she called "glad wrapped stools. I suspect that this might be because of the injection they gave her with the anesthetic.
She had a different kind 2 months earlier with the other eye operation and no problems. This time however she suffered short memory loss and reported having kind of glad wrapped stools. She did complain about pain in her chest. So it may be that what she was given by the anesthetist may have acted adverse to her. While you wrote about your problem some 6 years ago, it might nevertheless be worthwhile to make sure it was not an adverse reaction to something you either did eat, drink or some injection you may have had.
Gerrit
Thanks for the advice. It does make me feel better when no one knows what it is cause then at least I know that it is not a common symptom of something else. I will keep my eye on it (although I would rather not) fingers crossed I ate plastic ;-)
See if it happens again. If it does I would see a GI doctor, as you are healthy with no other health problems. I can see why you would be concerned. If it was some type of plastic film you may have accidentally eaten, at least you passed it, the problem comes when you don't. Keep an eye on what you pass, and if it happens again, or you start having any type of stomach aches or pains, see the doctor.