In May 2018, Frank van Vree, the director of the Niod Institute along with others, discovered some unseen excerpts from the diary that Anne had previously covered up with a piece of brown paper. The excerpts discuss sexuality, prostitution, and also include jokes Anne herself described as "dirty" that she heard from the other residents of the Secret Annex and elsewhere. Van Vree said "anyone who reads the passages that have now been discovered will be unable to suppress a smile", before adding, "the 'dirty' jokes are classics among growing children. They make it clear that Anne, with all her gifts, was above all an ordinary girl".