fake azz Jamaican
A person who tries to adapt the customs and mannerisms of someone from Jamaica, even though they have no connection with the natives, other than being a wannabee.
Example:
Look at that fake azz Jamaican with the dreads and Bob Marly jacket. That jabronie is from friggin' Guyana!
Look at that fake azz Jamaican with the dreads and Bob Marly jacket. That jabronie is from friggin' Guyana!