1. In 1988, a 15-year-old girl living in the small southern African nation of Lesotho came to local doctors with all the symptoms of a woman in labor. But the doctors were quickly puzzled because, upon examination, she didn't have a vagina due to a birth defect.

The girl had been in the same hospital 280 days (approximately nine months) earlier, after she was stabbed in the abdomen. She had practiced fellatio with her new boyfriend and was caught in the act by her former lover. A knife fight ensued. Doctors concluded that spermatozoa had gained access to the reproductive organs via her injured gastrointestinal tract.

2. In 1999, Sharon Irons, a married doctor who was having an affair, saved the semen of her lover in her mouth after an episode of fellatio and used it to inseminate herself, resulting in a pregnancy. Her paramour (a fellow doctor) sued her for fraud and emotional distress, but the court sided with Dr. Irons and ordered him to pay child support for the baby.

(source: Quora)