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To quote the South Park Archives article on Trapped in the Closet, "Stan's final lines "sue me, I dare you" was an in-show threat by the creators who were actually daring Scientologists to sue them for mocking their 'religion'. The Church of Scientology has a well-known history of suing their critics, including lawsuits in the UK (thus the line "We'll sue you in England"). Defamation laws in England & Wales are extremely plaintiff-friendly: once a plaintiff has proven that a statement could potentially affect his or her reputation, the defendant must prove the truth of the claim on a balance of probabilities."