1. Greetings to a friend or a large crowd to announce your arrival.
2. Can be used as a pronoun to get a persons attention without saying their name.
3. Celebratory; Elation; Happiness
4. Used to described illegal substances such as narcotics.
"HEY Whodaba", he shouting to the party as he walked in the door.
"Watch out Whodaba, I have a hot plate in my hands"
"Hey man, that was some good Whodaba the other night, got anymore?"