The famous "Mouth of Truth" (Bocca della Verita) located in the portico of the church of Santa Maria in Cosmedin in the Forum Boarium. The sculpture is thought to be an ancient manhole cover of a water god. Legend has it that the Mouth of Truth is a lie detector, if you told a lie with your hand in the mouth of the sculpture, it would be bitten off.
This is one of the finest examples in Ireland of what is known as a ‘mouth-puller’. These carvings were placed at doorways and windows of medieval buildings to scare away intruders and evil spirits. Dundalk,Ireland