Young, Wild and Wonderful (1980)

As the bus empties the students for their field trip to the Museum of Natural History, little does the tour guide suspect that the students are there for more than just another tour. First, during the lecture films, the coeds drift into dreams of the most erotic fantasies one can imagine. After the films, they release the emotion of the fantasies in the most erotic and uncommon ways. One slips off to the curator's office for a little "acquisition. " Another finds the anthropologist to see what bones can be identified. Even the head teacher isn't immune. Soon the tour is over, but as the bus departs, everyone admits it was quite an education.