In Orthodox Jewish lingo, Jesus is known as "Yeishu". This is an acronym for "Yemach Shimo Vi'zichrono", meaning "May his name and his memory be erased". (The reason that the V at the beginning of that last word is seemingly silent is that in Hebrew a V- vav- can also make a long "O" or "U" sound.) He is believed in that doctrine to be not the son of god but merely a good-for-nothing rebel.