Back That Ass Up

It's 2:44AM and I'm organizing my iTunes. I wanted to correctly label "Back That Ass Up" so I Googled it. This is what I found on Law.com:
http://www.law.com/jsp/article.jsp?id=1106573712927

Positive Black Talk Inc., et al. v. Cash Money Records, et al. plunged the conservative appellate court into the world of booming bass lines and popular street slang.

Chief Judge Carolyn Dineen King, who wrote the opinion, boiled the case down to a dispute between Louisiana rappers Juvenile and D.J. Jubilee over who owned the rights to a song "that included the poetic four-word phrase 'back that ass up.'"

I love the law.