Hootie hoo

[Rihanna]

Ironically, Hootie hoo was first heard on the whitest show on television,The Andy Griffith Show. It was the greeting at the lodge to which Andy belonged. Its current usage would be more surprising if there were not so many other references to the show in urban colloquial language (e.g. Opie)

[Tina]

A hedz up to otha brothaz thet be chillin in da [hood] that the [popo] is out an prolly aroun tha corner reddy to bus yo ass fo smokin that [chronic] stack. Made popular in part by Outkast in tha hook from Slump off Aquemimi.

[PussyCat]

Hootie hoo is a call used by the host(s) of a party to let everyone know the partys been busted and they need to [gtfo]

[Rihanna]

several different meanings (varying from its original meaning as a greeting)
can be shouted out as a means of small celebration, gratification, etc.

[Jason Yan]

Ghetto call to see what is going on or what is lurking in the streets.

[Tina]

Its what you say when you see an extremely large woman (and on occasion a man), who has a very round shape and usually has clothes on that are too small.

[Sarah]

thats tha code for tha killahs

[Little_Girl]

The call of the gangster or if u are a faggot ass science teacher what you yell out at the end of spring or some gay shit like that.

[Guest]

It was also adopted by radio personalities, Mark and Brian. They credited the saying to the Andy Griffith show.

[Guest]

[Guest]

The po po is near, hide yo stash

[Guest]

In Dem Streets... Bring It, I need back up now!