It's hard to say without more context....
Could you perhaps mean "get somebody shaking"?
If so, that is a slang expression that means to encourage or urge someone to get to work, or to get moving.
Again, more context is needed. If the phrase is "Nothing, man" (with a comma), it sounds like it is a response to a question. "Man" is often used just as meaningless filler in conversations, like "Man, I am so tired, I can't wait to go home" or "Can you loan me some money?" "No way, I'm totally broke, man."
Student or Learner