'nun'
Not long after the marriage, Tom and his father met for lunch. "Well son," asked the dad, "how is married life treating you?"
"Not very well, I'm afraid. It seems that I married a nun."
"A nun??" his father exclaimed.
"That's right. None in the morning, none at night and none unless I beg."
The father nodded knowingly, and patted his son on the back. "Why don't we all get together for a nice talk tonight?"
Toms face brightened. "Say Dad, that's a great idea."
"Fine. I'll call and tell Mother Superior to set two extra plates."