On Brainiac: Science Abuse, a question was emailed in asking about "Brown Noise". Supposedly, a certain sound can be played to make anyone's bowels within one meter loosen, leading to a bowel movement.
It worked on the victim who tried it, which was interesting. If true, it would be much better than suppositories.
For any audiophiles out there, the sound is 22.75hz @ -30 decibles. If you want to try it, let us know how it works. And, let us know what equipment we need to produce the sound at home.