The article focuses on the problem of contemporary children's folklore in the Czech Republic - specifically, on songs and rhymes that include names of famous personalities or of film and literary heroes. These songs circulate in children's groups by word of mouth, without any intervention from part of adults. They are characterized by coarse expressions and unsophisticated childish humor. Precisely because of their coarseness these folklore forms are being passed on outside the influence of adults. Even though on the first sight these songs are simple parodies on songs popular at given moment, in fact many of them have outlived several generations. The oldest song included in our collection has been passed over for at least 70 years. Of course, songs about celebrities loose some of their currency with the passing of the time - for example, the rhymes about famous sportsmen. In the 1990s, a song about Soviet astronautics died out, due to the fact that the propaganda that stimulated its humorousness also disappeared. The most popular heroes of children's poetry are the personalities from movies based on books of Karl May (Vinnetou, Old Shatterhand etc.), as well as some famous historical personalities. Besides, there are songs about pop singers, less frequent are those about politicians or sportsmen. Also, there are only few about fairy tales personalities. Melodically these songs are based either on folk songs, or on current hits or theme tunes from TV series. Those children's songs based on traditional songs proved to have much longer lifespan.