I had never heard of that part. Is that part of the Iranian belief system? Different ME cultures have slightly different beliefs. Why did you intentionally leave out the comments about the shape of the nose?
According to the reported sayings of the Prophet Muhammad some of the features of al-Mahdi are:
* He will be tall
* He will be fair complexioned
* His facial features will be similar to those of the Prophet Muhammad
* His character will be like that of the Prophet Muhammad
* His father's name will be Abdullah [same as Prophet Muhammad's father]
* His mother's name will be Aamina [same as Prophet Muhammad's mother]
* He will speak with a slight stutter
* He will occasionally hit his hand upon his thigh when he stutters
* His age at the time of his emergence will be forty years
* He will born in medina (literally a city or township)
* He will receive Knowledge from Allah
The Wahabbis have an altogether different view. I left out Hojjetiah features because some Freeper will grab the characteristics from one of the other sects and miss the whole point.
The primary point is the belief that if enough chaos is generated, the 12th Imam will emerge.
Semper Fi