(Newser) – Usually, the worst an ill-advised Facebook post can do is embarrass you (assuming you haven't committed a crime). But recent prep school grad Dana Snay cost her father $80,000 when she made the mistake of talking about her dad's wrongful termination settlement with Gulliver Preparatory School, the Miami Herald reports. Patrick Snay, 69, had sued the school for age discrimination and won $10,000 in back wages plus an $80,000 settlement. But there was one little condition: Snay had to keep the deal secret.

Technically that meant he couldn't tell his daughter, but he says he "needed to tell her something"—the suit alleged that the school had retaliated against him through her, and he says she has "psychological scars." And telling her might have been fine, had Dana not gone on Facebook and written:

"Mama and Papa Snay won the case against Gulliver. Gulliver is now officially paying for my vacation to Europe this summer. SUCK IT."

The school never paid the settlement, saying Snay broke his confidentiality agreement, and on Wednesday an appeals court agreed. "Snay violated the agreement by doing exactly what he had promised not to do,” the judge wrote. “His daughter then did precisely what the confidentiality agreement was designed to prevent." Bustle says it must be "the most expensive Facebook status of all time." (In another case involving the courts and social media, a woman has sued over her "attractive convict" mugshot .)