Sports, politics, movies, videogames, questionable hobbies, photos from your family vacation, etc. Talk about stuff that isn't ponies or music. But do try to stay on topic and respectful of alternate opinions.
The pony is my avatar is technically an OC of mine, but it's not my ponysona. My ponysona was created as a joke and it's pretty much the most generic pony possible, a black pegasus with a red mane.
Oh, then there is my Ghelded Kultz OC, I'm created them and I'm not even sure which was in mine.