A man has six children and is very proud of his achievement. In
fact, he is so proud of himself and his ability to impregnate that
he starts referring to his wife as "Mother of Six" despite her
constant objections.
One night, they get a chance to leave the kids behind with a sitter
and go to a party. The man decides that it's time to go home and
wants to find out if his wife is ready to leave as well. He shouts
at the top of his voice, "Shall we go home, Mother of Six?"
His wife, irritated by her husband's lack of discretion, shouts
right back, "Anytime you're ready, Father of Four."