If, for example, Davies were rehearsing the scene with Mick (act 2, pages 48 to 51 Harold Pinter, The Caretaker, London: Methuen, 1960.), Territory I and all of the taking the piss exercises would be a good starting point. Taking the Piss III would be especially useful for his relationship, because Mick is potentially physically threatening to Davies as, their first encounter, Mick actually subdued him with physical force, and after that Davies is always aware of that possibility.