Anne also touched on sex education, which she wrote about from the perspective of educating her imaginary friends and used phrases like "rhythmical movements" to describe sex.
Two pages Anne Frank covered with brown masking paper in her now world-famous diary are secret no more, a team of Dutch researchers announced on Tuesday.
"I'll use this spoiled page to write down "dirty" jokes", she wrote on September 28, 1942, after hiding in the secret annex for several weeks, according to the Anne Frank House.
"I'll use this spoiled page to write down "dirty" jokes", a 13-year-old Anne wrote on a page with crossed-out sentences. "They bring us even closer to the girl and the writer Anne Frank".
Her father, Otto Frank managed to survive the Holocaust and published his daughter's diary in 1947, in hopes it would become a revelation to the agony faced by Jews.
That said, while some speculate Anne may have covered up those pages to hide the sexual content from anyone who might find her diaries; it's also possible that she wanted to hide those writings for other reasons. He calls the jokes Anne Frank wrote down classics.
Anne kept more than one version of her writings after hearing on the radio that the Dutch government, which was in exile at the time, meant to publish personal accounts of those who suffered under the German occupation.
According to the Anne Frank House, the teenager often reread and edited her diary.More news: The Americans spoke about the opening of the Crimean bridge
Her father is also the central source of inspiration for her dirty jokes, and Anne also refers to him visiting a "big house" of prostitution in Paris.
Anne died in the Bergen-Belsen concentration camp three months before her 16th birthday, in 1945.
However, Anne Frank House believes the pages' publication is justified as her diary papers have UNESCO world heritage status, and the text offers the possibility of gaining a better insight into the way the diary papers were created.
One of her jokes was: "Do you know why the German Wehrmacht girls are in Holland? As mattresses for the soldiers", read one of the jokes she related.More news: Solo A Star Wars Story premieres at Cannes 2018
Instead, say the experts, the discovery should help give the most famous Holocaust victim - who would have been 89 next month - more of a real presence in people's minds. The texts that have now been revealed are included in the academic research into the diaries of Anne Frank and her development as a writer that the Anne Frank House has been carrying out together with the Huygens Institute for the History of the Netherlands since 2010. "It all goes to show that on that day Anne was closely scrutinising herself, her own sexuality and the world around her".
In the newly uncovered entry, Anne writes as though she were giving a lesson on sex education to someone else.
Then she filled a page with words about how a young woman starts to menstruate around age 14, "a sign that she is ripe to have relations with a man but one doesn't do that of course before one is married".More news: Brooklyn Nine-Nine saved after outcry from fans over its cancellation
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