Wikipedia
According to legend, Masoud was an infamous black slave belonging to the Fatimid Caliph Al-Hakim bi-Amr Allah. He was said to be a large man used by Hakim to carry out a bizarre punishment. Al-Hakim was said to have occasionally wandered the streets of Cairo looking for deceptive merchants. When he discovered one, he would immediately have Masoud publicly sodomise the man.
This folk tale has inspired a phrase which has survived into modern times, in which citizens of Cairo threaten to "bring Masoud" to a merchant who they believe is trying to cheat them. There are a number of tales of questionable historicity portraying Al-Hakim as deranged. Ismailis claim that anti-Ismaili historians concocted derogatory stories about him. Among these is the legend of Masoud.
Masoud (also spelled Massood, Massoud, Masood, Mas'ud, Masud, Messaoud, Mesud or Mesut, , ) is a given name and surname in many countries, meaning "fortunate", "prosperous", or "happy". Although some experts believe that the origin of this name comes from Arab countries, it is a very popular surnames in Iran and Turkey. There are famous people in Iran and Turkey with this surname, such as Mesut Özil (German pronunciation: [ˈmeːzut ˈøːzil], Turkish: [meˈsut ˈøzil]; born 15 October 1988), a German footballer who plays for English club Arsenal and the German national team.
Masoud (birth name Masoud Fouladi Moghaddam Born May 22, 1985) is an Iranian Record producer, Artist and DJ lives in Bandar-e Anzali, Iran he is known for leading electronic dance music artist community in Iran