Picture to yourself the classic pinup of a naked lady in full, feline stretch, with her arms locked behind her head. If you ever see this for real, in the wild, you must not allow the lady to lower her arms. To demonstrate why, we will need a diagram.
Imagine a bowling ball with a hole drilled through it (the boobie), resting against a box (the torso), connected to a string (the pectoralis muscle). The string is tied to a stick (the arm bone). When the stick is raised, the ball rolls upward. When the stick is lowered, down goes the ball. Thusly:
It’s true. Boobies that are perky when they lady’s arms are relaxed at her sides are, indeed, perky boobies. Boobies that appear perky when the lady’s arms are above her head are highly suspect and likely droopy. Boobies both large and natural are often extremely gravity-challenged in this way. Which is how that came to be the classic cheesecake pose.
Sorry droopy-boobied ladies. I have a diagram. That makes it science. And nobody can argue with science!
To see how this works in the real-world, here’s an artist’s reconstruction:
The lady on the left, her boobies are perky and cheerful. The lady on the right has sad, droopy boobies. The difference? There isn’t one! It’s the same lady! And she slept with the president!
In conclusion, someone told me if I posted pictures of boobies, I’d get lots of traffic.