I think the idea of the "Boobstrap" is to separate and highlight the size and shape of the boob in question, by hanging something between them to pull the material tighter. In the example given, it happens to be another article of clothing.
I'm OK with it. Let's see what you have!
Turtle, if I'm wrong or we stray too far offbase, speak up and we'll make it right.
Thanks guys! This is a tough niche to fill!