http://www.rome.worldweb.com/Photos/LandmarksandHistoricSites/10-9254.html
The Mouth Of Truth
**It is believed that this huge tourist attraction now located in S. Marie in Cosmedin’s wall was once a Roman drain. Legend has it that the hands of liars will be ‘bitten’ off by the staute when placed in the mouth, hence the Mouth of Truth. **
i just wanted to share it with everyone so liars beware:D