Crap Cannon

The "crap cannon" is a device that emits a musical sound that produces uncontrollable bowel movements in human beings. The television show Mythbusters ran an episode disproving this urban legend in 2004.

Fast Facts:

Crap Cannon also known as the "Brown Note"
Supposedly used for crowd control¹
2004: disproved by Mythbusters
No sound found to cause gastro-intestinal convulsions
Relegated to urban legend status
Parodied by popular animated show South Park

Re-create 68

Protesters preparing to attend the 2008 Democratic Convention are getting ready for police to use crap cannon against them
Re-create 68 founder Mark Cohen believes crap cannon is real
Cohen cites "eye-witness" accounts of the weapon's use in Miami in 2003 for his beliefs.¹
U.S.Government gave Denver $50 million for security
Re-create 68 members believe money is for ultra-sonic weapon¹

Mythbusters

The Discovery Channel show, Mythbusters, ran an episode debunking the crap cannon back in 2004. While some sounds were found to irritate the bowels, none produced the reported effect.