"I want to pick your brains about something: there's this film I want to see, called 'Geisha Girl' "
"Do you mean 'Memoirs of a Geisha', Mum?"
"That's it. Now what does it mean by 'BBC4 on BBC2'?"
"That's when the BBC shows digital programmes on BBC2 for those of us who haven't got digital TV. What channel are you looking at?"
"Well, that's all you need to know, isn't it?"
"Oh, well it's on tonight"
"I'm sure the movie isn't on TV tonight, Mum. It's only just got into the cinemas. Maybe it's a documentary. Shall I look for you?"
"Mum, there's nothing on tonight with that name, no BBC4 programmes. What day are you looking at?"
"That's strange. Tuesday 7th February"
"Mum, it's Wednesday the 8th now. You're looking at last night's television"
"Maybe I can leave the tape running to record it"
"No, Mum, it was shown last night. You can't see it. It was shown yesterday"
"Oh, I suppose I'll have to wait for it to come out on video, then. I was just too tired to watch it last night."
Mum doesn't know what day of the week it is. She doesn't know that Wednesday is after Tuesday.