This sound is from 14 Year Old Girl Sounds

A Real Young Girl (French Une vraie jeune fille) is a 1976 French drama film about a 14-year-old girl's sexual awakening, written and directed by Catherine Breillat. This led to the film being banned in many countries and it was not released to theatres until 2000.
See also: Gerald Friend, Soraya Manutchehri, The 40-Year-Old Virgin, Murder of Olly Stephens, List of youngest birth fathers, Vinson Filyaw.