Hang loose

[Couch Potatoe]

As used in the Hawaiian Islands, Hang Loose or Shocka is used as a non verbal expression; or greeting. To tell the receipiant, that every thing will be OK, Relax, Stop looking at me w/ that stern look on your face.

[Britney]

Stand by, and take it easy or relax while doing so. This term, or its near relation dangle loose, is a commonly-used southern Louisiana slang expression. Possibly opposite to uptight: both expressions alluding to positions of the testicles.

[Justin Bieber]

No underware baggie pants pull way down now whats hanging loose!! (mexican definition NO!)