Truth or Dare (Action vérité) 30 years old

Innocence gives way to experience. Two girls and two boys, probably about 14 or 15 years old, play a game of truth or dare. The questions and the challenges deal with sex; it's innocent and harmless, but at each turn, each youth tries to raise the ante. Then, Paul gives a dare to Rose, and the result brings on a sudden and complete silence.