When you fuck somebody in the ass enough that their intestines come out, in a pink sock fashion, then you tie the intestines in a knot. This is very painful.
I was taking it in the ass from Bozo the clown the other day when my intestine started falling out. Next thing I knew there was a giraffe hanging out of my ass. He just can't resist the funky balloon knot.
Being hit in the face with a tied used condom full of semen.
Hey Pete, I can't believe your dad balloon Knot Slapped me last night!
The ancient art of spreading one's butt cheeks apart and touching anus's.
My friend Bill is right into yoga and shit, I heard he gave jenn the balloon knot squeak. It's when you lay ass to ass, and touch anus's