0 used as a friendly greeting, to ask someone how they are, or to ask what is happening: --
The ad consisted simply of a bunch of American blokes screeching "Whassup!" to one another down the phone.
His phone goes. "Wassup?" he says nonchalantly. "What are you doing?"
Sometimes when I rang him he'd say, "Whassup?" and I, confused, would reply, "Nothing's up. Why do you think something's up? I'm just ringing to say hi..."
Certain slang terms, such as "My bad" or "Whassup?", may lead to misconceptions about a student's potential.
Then Eddie was like: "yo wassup bro, yo it's ok yo".