i was trying to think of what urban legend i'd heard that i found really chilling even though when i was reading it i knew it wasn't true... and i came to the conclusion it was the one of the hollowed out baby being used to smuggle out drugs (as told by Snopes http://www.snopes.com/horrors/drugs/deadbaby.htm)
the original story i heard though has a man making the discovery and i can't remember the details i heard but the dead baby goes missing, so the drug smuggler says 'well we need another body' so the guy who discovered it gets killed. thus reinforcing the whole idea that drug smugglers are evil people.
its one of those stories that even though you know is not true makes you feel very cold. probably because of the contrast between evil and innocent (the drug dealer being evil, and the baby the ultimate innocent).
jo