A husband and his wife advertised for a live-in maid to cook 
and do the housework.  A likely-looking girl came in from the 
country, and they hired her. 

She worked out fine, was a good cook, was polite, and kept 
the house neat.  One day, after about six months, she came 
in and said she would have to quit.

"But why?" asked the disappointed wife.

She hemmed and hawed and said she didn't want to say, 
but the wife was persistent, so finally she said, "Well, on my 
day off a couple of months ago I met this good-looking fellow 
from over in the next county, and well, I'm pregnant."

The wife said, "Look, we don't want to lose you.  My husband 
and I don't have any children, and we'll adopt your baby if you 
will stay." 

She talked to her husband; he agreed, and the maid said she 
would stay.  The baby came, they adopted it, and all went well.

After several months though, the maid came in again and said 
that she would have to quit.  The wife questioned her, found 
out that she was pregnant again, talked to her husband, and 
offered to adopt the baby if she would stay.  She agreed, had 
the baby, they adopted it, and life went on as usual. 

In a few months, however, she again said she would have to 
leave. Same thing.  She was pregnant.  They made the same 
offer, she agreed, and they adopted the third baby.  She 
worked for a week or two, but then said, "I am definitely 
leaving this time."

"Don't tell me you're pregnant again?" asked the lady of the 
house. 

"No," she said, "there are just too many kids here to pick up 
after."