It is so exciting looking at your skinny sexy bottom as you work on him with such affection and dedication, so sweet. This all reminds me of my my dear old Beth and how we were a few years ago. Her simple joy in my own pleasure. And seeing your slim body and skinny exposed anus reminds me so provocatively and excitingly of our mutual satisfaction as I would rub Beth's wet asshole. The pleasure she received from my fingers and my tongue there (and elsewhere). A fountain of my cum often resulted from my manipulation of her little anus, and even now as I remember.