Imagine the following written conversation, as recently occurred via SMS between me and a friend (edited for brevity):
A: What are you going to do today?
B: I don't know. Go shopping?
What is the meaning of the question mark in the reply? Is person B asking a question of person A? If so, why would person B expect person A to know the answer in this case? If not, why use the question mark?
Best Answer
It looks as if Person B is saying that he might go shopping, but that he is not certain. It is common in very informal communication to append a question mark to indicate uncertainty. In speech, this would usually be inflected as a question.