I know something similar, though I must credit this to the place it came from: a travel book about Australia by a guy called Bill Bryson. The book is called "Down Under" in the UK edition, and "Notes from a Sunburned Country" in the US edition.
I don't remember the exact wording of the anecdote, so I won't put it in quotes, but the gist of it is all from him:
Bryson had a friend in Australia who in turn had a friend who lived next to a plot that had been empty for quite some time. Then one day the plot was cleared for construction and crews arrived to start building the house that would one day stand there.
The friend of Bryson's friend had a four-year old who naturally took quite an interest in the goings on at the construction site and soon enough, the workmen took notice and gave her little jobs that she could do and adopted her as sort of a mascot. Not much after, they presented her with her own little paycheck, a couple of Aussie dollars or something.
The kid brings the paycheck home, shows it to her mother who is, of course, immensely proud. The mom suggests that they should go to the bank right away to deposit the paycheck into the child's savings account.
They're at the bank and the bank teller (probably encouraged by the girl's mother) makes the appropriate cooings of admiration and asks the girl how she came by her very first paycheck.
She answers: "I built a house this week."
He says: "That's wonderful, and will you be building a house again next week?"
The girl answers: "I will if we ever get the f***ing bricks."
Kids... you gotta love 'em.