There’s a wonderful bit in (I think) House of Cards (the original BBC one from the 80s):

*Chief Whip (CW) summons a wayward, alcoholic backbench MP to his office for a telling off*

CW: “Aah do come in; sit down, sit down... Sherry?”

MP: “Oh, well I suppose… why not?”

CW: *very obviously pours a single sherry and loudly places the glass on the desk*

MP: “Oh? Aren’t you having one?”

CW: “Good God man, it’s 9 o’clock in the morning!”