And here's another similar word- "Holla"

The word "Holla" comes from contemporary African American hip-hop/ urban culture. Holla is pronounced HOL-lah. One meaning of 'Holla' is to talk [as it comes from the word "holler" meaning "talk loudly".

In the context of 'talking' holla can mean to 'get ones' rap on' [a new way of saying 'rap'] with the a lady [or a man].

Holla can also mean 'call a person up on the telephone' or otherwise talk with them later.

But "Holla" is also used at the end of a sentence in a call & response type way to show that you really mean what you said. In that context, you are either confirming what you said yourself [thus acting as both the caller and the responder]. Or you are literally or rhetorically asking for affirmation from others of what you said. In that context, if someone responds to you it would be with a word like this: "Yeah"; or "You got that right" or [the dated sayings] "Right on" or "Word!" or "I feel you, man" or -in religious or non-religious contexts- "Amen!".

See these examples from the http://www.urbandictionary.com/define.php?term=holla