Usage of "Shit-n-Shit" is similar to that of the word N shit. It is just another way to end a conversation; however, using this word it is a lot funnier, plus it implies more than just N shit. (Twice as much).

Also "Shit-n-Shit" can be used to describe: items, activities, or just about anything you can use the word shit for.

A pick me is a woman that is willing to do anything for male approval. She will embarrass or throw other women under the bus to achieve this goal. The unfortunate thing about a pick me is usually the men they are trying to seek approval from are of poor quality and treat women badly, leaving little real benefit for the pick me.