Marriage Arranged by an Unborn Baby

The other day a Chinese told me that to go with the traditional custom,one's marriage has to be decided by his or her parents and that accordingly,her mother's marriage was arranged by her grandparents,but her sister has broken the tradition.

"How?"I asked.

"Her marriage was arranged by her unborn baby."

"What do you mean?"I was puzzled.

"She had to get married because of her premarital pregnancy,"She explained in embarrassment.