1) Typically used to signify that speaker does not care whether their behavior emotionally upsets someone else.

2) The term could also be used to acknowledge that the speaker's behavior could upset someone, but the speaker stands by their behavior.

sorrynotsorry is a term used by someone usually unhappy with someone because they are thought to have done something wrong. They use this term as if to say "What I did wasn't wrong so Sorry, I'm not sorry". It is often "hashtaged" on the social networking website Twitter.

A stupid saying that stupid ass young girls say to make them sound bitchy but they really arent.

A new breakthrough single by Demi Lovato, it is used to represent the fact that a person doesn't emotionally care on whether a behavior upsets someone or not.

Another limp dick passive aggressive move done by some who are trying way too hard to seem cool, smart, sarcastic and/or funny. Key term, trying way too hard..... Usually the attempt is an utter and complete failure and perceived for what it truly is, yet another desperate stab at attention.

It means that you’re sorry because your not sorry