Scout's honor is a honorable promise. While saying the words "scout's honor," one must hold up three fingers. So, in today's world when a guy say's "scout's honor," he means he just got three fingers deep in a girl.

the whale tail is the shape formed when a g-string rides up high over a womans trousers

1. To finger a girl with everything but your thumb and pinky finger.

A hand sign used to represnt a male finger banging a female.

fingering a girl with three fingers while outdoors.