Usually said in disbelief, shock, or amazment.

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.

a general exclamation used in any situation, good or bad

A variant on saying shit. In my mind a more exotic exciting way of swearing.

in other words your just saying shit as in shit that hurts only you add son on the end to make yourself seem cooler

the combination of shit and son. In other words, it is the equilvalence of shit or shoot.

Something to say when ur about to run.