A point in a conversation or social interaction at which one or more individuals involved start behaving in a distinctly unfamiliar manner or displaying a set of emotions with such an intensity that it weirds out someone else involved.
This what you call a girl who still has her v card. Being a virgin. No sexual experience ever. Never been kissed or hug. Hand haven’t been kissed. Nothing. Not even been out on a date.
Who will brave those waters? That’s unchartedterritory and can’t learn from any other man how to get this girl in bed easily.