When someone perches themself on a lower branch of a tree with their pants down, and when someone walks under them they swing down with their legs hooked on the branch and their butt hanging low and bend a monkey on the unaware passer-byer.
When your reading/watching a book, movie or something and at an amazing or cool part and you have to stop for what ever reason (too tired to go on, not enough time etc.) so your left "hanging" on the "cliff"