Have you ever experienced poop shivers?

Yes, I have. I love it. The nervous systems has many sensors placed in the rectum to control the bodily function of pooping and to help detect any problem in the sensible rectal area, so it is normal to have intense sensations there. Specially when you are a man and have a prostate. The stools remaining or ping there obviously stimulate the nervous terminals and end up giving pleasure for the likes of us (people who like to feel bowel movements). Besides, the natural need of ping the stools and the relief in doing so can make the act of pooping a pleasant experience. Freud would say you had a very positive phase (the phase is when a child learns to control the to hold the poop in and get it out in the right moments) and possibly ociated it in a positive way with your ual development. I love it a lot when the stool is big and hard and hurts a little while coming out, and the sensation of holding it in a little also stimulates me.