A boy was assigned a paper on childbirth and asked his parents, "How was I born?"

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

"Oh," said the boy. "Well, how did the two of you get born?"

"Oh, the stork brought us too."

"Well, how were grandpa and grandma born?" he persisted.

"Well darling, the stork brought them too!" the parent exclaimed, by now starting to squirm a little in the Lazy Boy recliner.

Several days later, the boy handed in his paper to the teacher who puzzled over the opening sentence: "This report has been very difficult to write due to the fact that there hasn't been a natural childbirth in my family for three generations."