seven o'clock sharp
In fact , I rather revelled in the promise of nocturnal distraction . Fearing , however , that I might drop off to sleep at three or four o'clock and thereby run the risk of over sleeping , I dashed off to the head of the stairs and shouted for Britton . `` Britton , '' I said . `` I want to be called at seven o'clock sharp in the morning . '' Noting his polite struggle to conceal his astonishment , I told him of my second encounter with the lady across the way . `` She wo n't be expecting you at seven , sir , '' he remarked . `` And , as for that , she may be expecting to call on you , instead of the other way round . ''