<P> `` Back That Thang Up '' ( or the uncensored version `` Back That Azz Up '' ) is a song recorded by American hip - hop artist Juvenile . It was released on February 24 , 1999 as the second single from his 1998 album 400 Degreez . The song was Juvenile 's biggest hit single until the release of `` Slow Motion '' in 2004 , peaking at number 19 on the Billboard Hot 100 . </P>
<P> `` Back That Thang Up '' ( or the uncensored version `` Back That Azz Up '' ) is a song recorded by American hip - hop artist Juvenile . It was released on February 24 , 1999 as the second single from his 1998 album 400 Degreez . The song was Juvenile 's biggest hit single until the release of `` Slow Motion '' in 2004 , peaking at number 19 on the Billboard Hot 100 . </P>
who sings when you back that thing up
who sings when you back that thing up
Juvenile
Juvenile