When, during what's usually group *sex, one or more females are seen helping, coaching, or encouraging another through what seems to be a first-time or unfamiliar experience.

The girl[s] doing the coaching are often times not directly involved in the sexual act at the time; Since the girl being "coached" is almost always the only one that the sexual act is being done to, or by.

"*" - The term "sex" implies intercourse but is by no means limited to that; Fingering, Handjobs, Footjobs, Paizuri, Buttjobs, Blowjobs, Cunnilingus, etc, are all fair game.