Whata gwan Share definition Flag Whata gwan is a way Jamaicans basically say whats up or whats going on. Sean Kingston starts off most of his songs by saying Whata gwan. Whata gwan by mynameisqwertykeyboard January 1, 2012 0 0 Get merch Get the Whata gwan mug. Buy Now — $32.95 See more merch