Being the curious little thing that I am, I just had to try this. Marshmallows do very little for me. I froze them, and was surprised when I took them out. Just like above, nope, they're not cold, just barely cool to the touch, but much firmer. I got 5 of the normal (mouthful) sized ones in me, added 2 tampons from the banana trick, double diapered, and waited. And waited some more. A few HOURS later, with a little bit of help from a push, the tampons came back out, but very little else. I had a little bit of water prior to that, (very little, but was glad I was diapered. EWWW ICK in underwear) and about 6 hours or so after eating them, had some gas (ack!) and that was it. No cramping (Yay!) no giant filling like I was expecting either. On a side note, I had already had my usual morning BM, but I figured the marshmallows would pull water in and clean out the rest of things too??? Ah well, I'll stick to Magnesium Citrate when I want to be unavoidably messy. :-) Your anatomy may very well differ. :-)
Christi