From Sexcoin Wiki
The Sexcoin Project was launched in May 2013 by a BCT user named Chinsu. Although there was much jeering and 'wtf' posting, the coin launched and miners were attracted. After some time, Chinsu disappeared, leaving the client seemingly abandoned. Some members of the community picked up the code and started to develop against it. As time moved on, the coin gained a rather small but fun-lovingly fierce community.
TODO: finish this