Saeteurn is the last name of Mien people from South East Asia. The "Sae" portion of the last name was given to the Mien people from the Thai people, so technically "Saeteurn" should be "Dangc/Thang". People with this last name generally are smarter and stronger than any other Mien people.
This last name is also commonly mispelled as "Saetern" or "Saeturn".
"Dude, do you remember Chan Chiem Saeteurn from Oroville? Ya, I heard that guy is the greatest."
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!