Do you drink beer?

Lady: do you drink beer?
Man: yes.
Lady: how many per day?
Man: 3.
Lady: how much do you pay per beer?
Man: $5 each including tip.
Lady: how long have you been drinking.
Man: about 20 years.
Lady: 3 beers a day equates to $450 per month or $5,400 per year. In 20 years, that's
S$ 108,000
Man: sounds correct.
Lady: did you know that if you put that money in a savings account, that after interest, you would have had enough money to buy a plane?
Man: do you drink beer?
Lady: no.
Man: where's vour fuckina plane?