wha gwan is patois ( jamaican ) for what going on or whats up !

n. a greeting
What's going on? (in a quick fashion)

whats going on?

Familiar greeting for Jamaican's. Would normally be said when friends meet. Is used the same way as "What's Up".

Used by Little Jacob (Jamaican character?) in GTA IV, it means what's going on.

The wannabe way of spelling wagwan.

'hello people' or a way of saying 'hello love' in a gangsta way
or 'how things doin'