Synonomis with the exclamation commonly used in urban circles Holla. Haba is derived from the term, "Holla Bitches," which became Haba Litches, which eventually evolved to Habalicious, and finally became just Haba.
When seeing a fine female passing by, Russell exclaimed, "Haba"
Dude, did you see the eyebrows on that girl, Haba.
I was hitting that from behind last night, it was so Haba.