Original: A woman 's orgasm between one minute before and up to 45 minutes after insemination favors the chances of that sperm reaching her egg . If , for example , she has had intercourse with more than one male , such an orgasm can increase the likelihood of a pregnancy by one of them .
Simplified: If she has intercourse with more than one male , it favors the chances of one or the other male 's sperm reaching her egg .