At issue is LMFAO's chart-topping 2010 song, "Party Rock Anthem," which contains the phrase, "Everyday I’m shufflin’," in the chorus.
Ross says he got there first on his own chart-topper, "Hustlin'," which contains the lyric, "Everyday I'm hustlin.'" The song was released on Ross' 2006 debut album, Port of Miami.
According to a lawsuit filed in Florida federal court, "The use of Hustlin’ in 'Party Rock Anthem' is readily apparent, despite the slight change from 'Everyday I’m hustlin’ …' to 'Everyday I’m shufflin'…" and constitutes, inter alia, the creation of an unauthorized derivative work."
He does I'm sure but he prolly needed to have that phrase licensed, or at least proved that "everyday I'm shufflin'" had a valuable impact on the songs success.