Correct, though a wanker is somebody who self stimulates said knob.
In the context used, dick, prick, rooster, douchebag, wanker, knobend, peckerhead, tosser and dickhead would all appropriately fit.
I think Nanker covered the definition fairly well....I've elaborated above.
Lol....yeah, everybody in the commonwealth thinks the monarchy is great. None of us want our countries to become republics.