"- Sitting In A Tree"... something you add to an abbreviation of a cute couple's initials which implies the old first love rhyme "____ and ____ sitting in a tree, K-I-S-S-I-N-G, first comes love, then comes marriage, then comes baby in a baby carriage" (awesome preggers)

Usually reserved for couples that are capable of fairytale like endings or happily ever afters

Commonly used incorrectly to describe sexual relations, the eating of soup, or any other act starting with "s" that could possibly occur in a tree

When someone thinks they are the main character of their life. Usually comes with a side of individuality complex, quirky style and a self centered point of view.