A man comes home with his little daughter, whom he has just taken
to work. The little girl asks, "I saw you in your office with your 
secretary. Why do you call her a doll?" 
Feeling his wife's gaze upon him, the man explains, "Well, honey,
my secretary is a very hard-working girl. She types like you
wouldn't believe, she knows the computer system and is very
efficient." 

"Oh," says the little girl, "I thought it was because she closed
her eyes when you lay her down on the couch."