After running down the stairs, he is caught by a woman who pulls off his towel and spanks him on his bare butt. Brief frontal nudity is seen when he falls down.
3 boys decide to go skinny-dipping at the pond and invite their friend Honza (Michaela Doubravová, 11). But Honza is actually girl; she believes that she is a boy and doesn't know the difference between boys and girls. They take off their clothes and the boys start laughing. The girl runs off (full nudity from side/back).
"Indian" boys (7 and 10 years old) walk completely nude in a forest. The youngest falls into a beast`s lair, so the eldest catches a fish to secure his release.
Dieter (Dieter Hallervorden Jr., 5) is undressed by his dad and runs around nude when he's trying to avoid getting a shower. He ends up standing in the bath being washed. This is all part ot the title sequence.