If I want someone to remove someone from me because he is annoying or harassing me do I need the "of" ? I have heard both and while it may not be required to convey the intended meaning I think it should still be required from a grammaticaal standpoint.
I think the phrases are practically interchangeable. "Get him off (of) me." It could be 1) rhetorical or 2) literal. "Get him off me" is just less precise and the word 'of' is understood to be there.
- The boss is always on 'my' case, riding 'me' too hard. This is a request for help deflecting the boss's attention.
- The man is physically sitting on/lying on 'me'. This is a literal request to have him removed.