Balloon Butting is when you stick a balloon into your anus and then have a friend inflate it to induce sexual pleasure, or you self inflate using a series of tubes/straws.
Hey did you hear that Paul was Balloon Butting?
Ya! It totally burst inside of him and he pooped out plastic!
A word Shawna (or Nanalew on YouTube) and Tessa (or Meekakitty on YouTube) use to describe each other. It can also be used as a synonym for butt or bottom, or an insult.
Life is full of things that are unnecessary, needlessly unpleasant, and stinky. Butts are one of them. We all have at least one in our lives. Buttness can be used to describe anything that is awkward, uncomfortable, and makes you say "Was that really necessary???" It feels most at home in situations where you look back and realize that there really was no good reason for what you just experienced.
"I hate this office, there's just so much buttness going on!"