Wife: how much beer do you drink?
Husband: 3 or 4 pints a day
Wife: how much does a beer cost you?
Husband: £3 a pint
Wife: how long have you been drinking?
Husband: around 42 years
Wife: 4 pints a day equals 28 pints a week which is £84 a week or £4368 a year or £183456 over 42 years. Husband: sounds correct
Wife: you realise if you had put that money in the bank in a high interest account you would have had enough money to buy an aeroplane?
Husband: do you drink beer?
Wife: no
Husband: where’s your aeroplane?