A boy was asked to do a report on childbirth and so he asked his parents how he was born.

Well honey, said the slightly prudish parent. The stork brought you to us.

Oh, said the boy. Well, how did you and daddy get born?

Oh, your grandparents found us under a rock. the mother answered getting quite uncomfortable.

Well how were grandpa and grandma born? he persisted.

Well darling, they were found under a cabbage leaf, said the parent.

Several days later, the boy handed in his report to the teacher who read with confusion the opening sentence: This report has been very difficult to write due to the fact that there hasnt been a natural childbirth in my family for three generations.