Bumps in the Night

My coffee machine is talking to me. With little hums and whines that I catch when I'm not really listening. Soft whirrs and clicks that stir and tickle my hearing. My 'think I heard that' hearing. And not before long but after a while I realise I think these sounds are audible, and merely but possibly not just in my head. And that's when I think it's time I got some sleep. Or a new coffee machine.