When I am feeling strong, I respond to stupid phrases such as those in the book by taking them both literally and seriously. If the sales assistant says 'Are you alright there?' just say 'I'm sorry? In what sense?' If at the till about to pay you're asked 'How are you?' look puzzled and say 'I'm sorry, I can't remember when we met?' - also usable if addressed by first name. 'Costs are spiralling out of control' - 'Well at least they're coming down!' You get the idea. Control your environment!