I've been taking P&B shakes (w/o BH) for a few weeks now and it took several days before any "MP" came out. At first I was convinced that this was MP, as it was colon shaped, rubbery and hollow. But now, I'm not quite as sure. Problem is that I have expelled about 5-6 feet of this stuff so far with no signs of letting up. How can it be that so much MP is coming out. That's what doesn't quite seem reasonable to me. How long is the colon, anyway?