Wie die Wilden (1959)

The three friends Stepan, Kolja and Anton go camping together on the beach and are looking forward to living "like the wild ones" for a while and escaping civilization - and women. But soon Vera and Silvia turn up: two friends who claim the three men's spot for themselves because they have been camping together in this exact spot for five years. The men won't budge, so Vera and Silvia set up their tent right next door and try to scare the men away, for example by listening to the radio loudly. Stepan, Kolja and Anton agree to ignore the two women. So they change their plan: they want to make the men fall in love with them and then pretend that they are suddenly leaving...