He/she usually means that when you ask him/her if they want or need anything and they say that, they mean, "You know what I want, You know how I am."
I know what I would mean, but the only way to know what HE means is by asking him.
When a teacher you know says hi to you it means they are being polite and acknowledging you.
he wants to know more
When the girl you told you liked says she doesn't know she is expressing she does not know if she likes you in the same way.
He wants to know how you feel for him
you know just shake it
He doesn't know what his emotions are at this point in the relationship
They mean that : You (yourself) does not know how much they love or like or care for you.
It mean he is trying to let you know he likes you by complimenting you.
Don't know what you mean, change your question and I'll answer xx
it means he dosent know what to think or what u mean by friends his friends could be telling somethig about you to make him not like you as a friend
That means no!!