I grew up with a host of aunts and uncles (family friends), neighbors were Dr. last name or Mr./ Ms. first name, and my classmates parents were Mr. /Ms. last name. Strangers were sir, Ms. or ma'am. Even my older cousins were Cousin first name.

My parents were called Mr./ Ms. last name by my friends, and my dad was called by his first name and my mom was always Ms. last name by my brother's friends. My mom would correct my brother's friends.

The first time I was referred to as "Aunt" I felt old, but then again that term best describe the type of relationship I have with the child's parents.

What will you teach your children to call adults?

Family-friends
Neighbors
Classmate or peer-age friends' parents
Older cousins (ex your age/ your first cousin)
Strangers (librarian, waitress, bus driver etc)

Edit: I left out a category Help (landscapers, housekeepers, nannies etc) Growing up we called the help by their first name. With my children I will use Mr. Ms. first name.

What will you be called? Will you dictate what children call you or let their parents set the tone?