Roast beef and potatoes

SAM:Hi, Carol! Where's Tom?
CAROL:He's upstairs. He's having a bath.
CAROL:Tom!
TOM:Yes?
CAROL:Sam's here.
TOM:I'm nearly ready.
TOM:Hello, Sam. Have a cigarette.
SAM:No, thanks, Tom.
TOM:Have a glass of whisky then.
SAM:OK. Thanks.
TOM:Is dinner ready, Carol?
CAROL:It's nearly ready. We can have dinner at seven o'clock.
TOM:Sam and I had lunch together today. We went to a restaurant.
CAROL:What did you have?
TOM:We had roast beef and potatoes.
CAROL:Oh!
TOM:What's the matter, Carol?
CAROL:Well, you're going to have roast beef and potatoes again tonight!