Jodie Sweetin broke her arm in real life, so it was written into the episode. In the teaser (which is cut from syndicated airings), Stephanie comes home with a cast and explains that she slipped on a piece of pizza in the parking lot.
Danny: Who told you that?
Danny: Sweetheart, that kid Kenny...he's a bonehead.
Danny: Shouldn't you be finishing your car with Becky?
Michelle: I quit.
Danny: Aw, honey, why?
Michelle: Don't tell Aunt Becky this, but she's a girl.
Jesse: Personally, that's what I've always liked about her.
Rebecca: This is for all the girls who never got to race.
Michelle: Okay, but let's keep it at our house.
Kenny: Boys have car brains and girls have Barbie doll brains.
Michelle: Well, Barbie has a Corvette.
Kenny: But Ken built it.
Kenny: (refers to the rose Michelle has put on her car) Look! Your car goes so slowly, it's growing weeds.
Michelle: My dad said if I can't say anything nice, then I can't say anything at all. But my Dad's not here, and you're a weenie!