Well, the term'mom ballbust story' is very ambiguous. It could be a creative story written by someone where a mom has an adventure or experience that somehow involves balls, like in a game or activity. Maybe it's a story about a mom coaching a sports team and all the chaos that ensues around the balls used in that sport. But again, this is all just guesswork without more details.
I'm not entirely sure what a'mom ballbust story' specifically is. It could potentially be some sort of made - up or niche fictional story about a mother in a very unusual or specific situation. But without more context, it's hard to define precisely.