Final answer:
The speaker is not interested in anything unless it's from a specific person.
Step-by-step explanation:
In the line 'Well, nothin' - less'n it comes from you,' the speaker means that they are not interested in anything unless it comes from a specific person. The speaker is implying that they hold a high regard for this person and value their opinions or actions. This statement suggests that anything from this specific person holds more importance or significance to the speaker.