Best definition
a person who acts rasta when all they have is bob marley cd’s and is heavy set, dresses fancy may be misunderstood as a metrosexual. dislikes pot and people who indulge the substance. wears makeup (?) and likes cologne. do not befriend yambros.
Example 1

person 1 “hey dude i just got a rasta hat, im so natty right now, wanna be friends”

Real Rasta “ja man, you aint rasta, you is a yambros man”

Example 2:

Friend 1 “hey dude, is that guy gay?”

Friend 2 “nah man , he’s just a yabros”

Friend 1 “ohhh that explains why hes so fat”