Sarah is talking to her friend Estelle. "I just don't know what's the matter with you, Estelle. You're nearly 30 years old and you're still not married. Don't you want a husband?"
"Of course I do," replies Estelle.
"Then I don't understand. You've got really great looks and a good education, so why haven't you had any proposals?"
"But you're wrong there," replies Estelle, "I've been asked to get married dozens of times."
"Really?" says Sarah. "By whom, may I ask?"
"By my parents, who else," replies Estelle.