Complex sentence: After the release of the song, the phrase "Get that dirt off your shoulder" became common amongst African-American youth the phrase when used colloquially means to get enemies off your chest by brushing your shoulders off.
Split into simpler sentences: After the release of the song, the phrase "Get that dirt off your shoulder" became common amongst African-American youth. When used colloquially, this phrase means to get enemies off your chest by brushing your shoulders off.