'Mad Jansz' of our physiology lectures on reproduction had this tale to tell.
An alien couple landed on planet earth and met a newly married 'swinging' couple. They got very close and the alien couple wanted to know how human beings reproduced. The human couple obliged and did the sex act before the alien couple. Then the alien couple wanted to see the young human. 'Oh' said the human couple, 'you have to wait NINE MONTHS to see the young one'. The aliens were surprised and remarked 'If that takes such a long time, why was that indecent haste at the last moments of your sex act?' The humans had no answer to that.
An alien couple landed on planet earth and met a newly married 'swinging' couple. They got very close and the alien couple wanted to know how human beings reproduced. The human couple obliged and did the sex act before the alien couple. Then the alien couple wanted to see the young human. 'Oh' said the human couple, 'you have to wait NINE MONTHS to see the young one'. The aliens were surprised and remarked 'If that takes such a long time, why was that indecent haste at the last moments of your sex act?' The humans had no answer to that.