idk . i feel like , holy crap , what 's everyone 's deal . but i ' m being just as negative as everyone else . sometimes i feel like screaming at everyone , and then i think about it a little bit and i realize it wo n't help me any .
According to the above context, choose the best option to answer the following question.
Question: What does idk mean ?
Options:
- I means I 'm done kidding .
 - It means I Dream keenly .
 - It is shorthand for I 'm unsure .
 - None of the above choices .


It is shorthand for I 'm unsure .