A fork of Rural Dictionary
A mega-rich, handsome guy who is exceptionally faithful to his girlfriend, in other words, a guy too good to be true.
Your boyfriend is no Dao Ming Si; he is just a good-for-nothing love rat.
1. I felt uneasy at the party; it was full of people who were neither three nor four.
2. Mum doesn't want me to mix with those people; she thinks they are neither three nor four.