Virgin.

Schaut euch mal das Video an : "What does Virgin mean?" 

Es ist jugendfrei und aufklärend, aber folgende wiktionary Eintragung auch:

virgin (adjective)
 1. In a state of virginity; chaste, not having had sexual intercourse.
 2. Of a physical object, untouched.
 3. Of olive oil, obtained by mechanical means, so that the oil is not altered.
 4. Of mixed drinks, not containing alcohol.