A gross question, not sure why it even popped into my mind. Straight porn I guess, I love watching it. Something about a big red blooded male having straight sex... Anyways, big guys, with the pussy being so close to the arse, can you feel in sex, while inside her if she, well, needs to use the loo? lol. Am sure you know what I mean.
No you can not feel the shit inside the woman if she needs to have a bowl movement. I have fucked girls so hard some shit came out. I have also been told we need to stop so the girl could go to the bathroom. Never felt it though. My wife and I have played around with double penetration using toys and you can feel those, but not human waste.