gafigglegafuffin
The butt-sack is the most embarrassing and gross part of your body. It's where diseases like AIDS and other bad stuff live and multiply.
My butt-sack is so embarrassing, it got a new job at a haunted house.
I got AIDS from my butt-sack. It was a total horror show.
My butt-sack is so gross, it made my cat run away.