One who insists on basing life around rules, lists, money, and perfectionism. An auld will go about life insisting complete and total control over any activity large or small that may or may not involve or even directly affect him/her. An auld believes that he/she is always "ahead of the game" when in actuality, the auld is the butt of all jokes and is viewed by others as comedic relief.
This refers to sex that occurs between two individuals who once had a relationship, whether married or girlfriend-boyfriend, but who are no longer affiliated. Auld lang syne sex occurs when one or both of the people involved enjoyed the sexual aspect of the relationship, even if they broke up or grew apart.
Jeremy and Jessica had their differences, and ultimatelydivorced. However, they still got together from time to time for some auld lang syne sex. They figured that they had really terrific sex with each other; and, since they had once been married, it was really okay.