I recently heard of something called the pencil test, where a woman tries to tuck a pencil under either of her breasts. If the pencil falls to the ground, then shes passes the test. If the pencil stays under there, then she fails.
I believe it's supposed to be a measure of perkiness, but it seems like there would have to be a correlation with breast size and age. Is it easier to pass for smaller-breasted or younger women?