What's buzzin' cousin? informal slang
What is happening? How are you doing?
What's buzzin' cousin, Linda? I haven't seen you for a while.
What's buzzin' cousin? Is there anything wrong?
A: What's buzzin' cousin, John? B: Oh, pretty well.
Said when you want to shake hands with someone as a greeting or an agreement
Used to ask someone to send or deliver your greetings to someone else
A Way of saying "hey" or "hello", used as a greeting or to get someone's attention
This phrase is often used in the case of avoiding greeting someone first when seeing him/her on the street.
It's been a long time since I saw you.