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Shauna is the ex-girlfriend of both Bart and Jimbo.

She seems to be a bully, since Jimbo, Dolph and Kearney had to impress her throwing a duck's baby into the air, and according to Shauna, either the ducks suffer or Bart does. It is known she later made out with Jimbo, as she is watched kissing Jimbo by Ned. However, it seems that they weren't in a relationship as Jimbo was invited by Shauna over SpringFace to make out with her, along with 200 guys and 7 girls, implying Shauna may be bisexual.

When Jimbo, Dolph and Kearney went to watch Crawlspace, Shauna said that she didn't want to go and Jimbo made Bart take her to see All the Wrong Reasons instead. Shauna waited until she saw the lead male character's butt then left with Bart. They went to The Brown Burrito where Squeaky-voiced teen flirted with her until Bart stopped him. Jimbo thought that Bart had taken such good care of her that he would do so again the next day.