Can't you die of holding in pee/poop for too long? It's not just the fact it could rupture some organs but it's toxic. That's why we get rid of it in the first place
Eh, I don't know... Your muscles relax when sleeping. Plus how do you rupture your abdomen? That would mean that the gas built up in till you literally split open from your intestines to skin. You can rupture your bowel, or get a hernia, I guess. But you would be in excruciating pain before that happened. And that's IF this is possible. I'm gonna call BS.
O__O