Marcia Worthman is the obnoxious, gossiping next-door neighbor of the O'Neal family. She and Eileen are sworn enemies.
In the Pilot episode, Marcia had overheard the story about Kenny breaking the toilet on his date with Mimi. She had told the story out of context to a bunch of her friends, spreading rumors about Kenny having sex with Mimi. She later witnessed The O'Neal family revealing their sinful secrets to the world, meaning that she would only have more stories to tell. In response to this, she sent Eileen a ham, which is code for a huge insult to her.