The batteries were dead so I replaced them

Patient: ...too much is bad for you. Doctor: Well of course too much is bad for you, that's what too much means, you blithering twat. If you had too much water, it would be bad for you, wouldn't it? Too much precisely means that quantity which is excessive, that's what it means. Could you ever say too much water is good for you? I mean if it's too much it's too much. Too much of anything is too much. Obviously. Jesus.

to mount stairs

'It went down like a cup of cold sick,' he said to me, almost gleefully, tapping on his computer keyboard to try to locate a copy of the newsletter.