My servant will clean it

Two rich ladies were sharing a taxi and talking about the high cost of going anywhere by taxi.

One of the ladies said, 'Taxis are terribly expensive these days. The owners get a lot of money for nothing.'

'Yes,' said the other lady, 'and the drivers get such big tips that they soon become rich. They ought to be ashamed of themselves.'

One of the ladies was smoking a cigarette. After a minute or two she said to the other lady, 'Can you see an ashtray in this taxi? There isn't one on my side.'

'No,' said the other, 'there isn't one on this side either. Driver! Where is the ashtray in this taxi? Why haven't you got one?'