Is LMFAO NSFT (Not Safe For Trademarking)? Is LMFAO an Immoral or Scandalous Trademark? LMFAO is a Los Angeles-based dance-pop duo. You may know them from such timeless classics as “Sexy and I Know It” and “Sorry For Party Rocking.” In 2008, they applied to register several trademarks with the United States Patent and Trademark Office (USPTO). The applications were refused, among other reasons, because the marks were found to consist of “immoral or scandalous matter.” They have now re-applied – how do they plan to get around this issue?