Since we don't have more details, Kelly could be any woman. She might be a fictional character created for a story about birth in a city, or it could be a real person's experience that is being shared.
The 'curling iron' element makes it unique. In a normal Smosh fanfiction, you might not expect a curling iron to play a significant role. But in this type of fanfiction, it could be used in all sorts of creative ways, like a tool for a makeover gone wrong in a comical story or as a symbol of a character's transformation in a more serious plot.
The true story might be about a person's journey in the beauty industry related to curling irons. Maybe it was about a stylist who discovered a new way to use a curling iron through trial and error.
A funny curling story is when a beginner player tried to sweep so vigorously that they spun around in circles and fell flat on their back. It was hilarious to watch as they just lay there for a moment, looking dazed.
There was a curling team that accidentally sent the curling stone in the completely wrong direction. Instead of going towards the target, it went straight into the boards at the side. The players looked so shocked at first, but then they all burst out laughing. It was a really funny moment in that curling event.
Kelly is the main character in this story. She is likely a person who has a weight problem, specifically weighing around 600 lbs, and the story probably focuses on her life experiences related to her weight.