Firstie Lastie
A person who must always be addressed by both their first name and last name. Either they are one of many who share the same first name or it simply sounds weird if someone addresses them by only their first name.
John Smith? He's a firstie lastie, nobody calls him John without saying Smith as well.
firsty-lasty
A firsty-lasty is someone who is always called by their first and last name by someone who has a crush on them, or by someone who doesnt know them that well.
Hey Daisy, did you see John Hanley last night at that party?