White translation: Who are you trying to mess with?
"Finna" directly means "fixing," a common southern-
slang word that is used in the place of "going to do" or "attempting" and "
try" is used in the place of "challenging." Combined, finna try means "fixing to do" which is then used to say, "who are you fixing to mess with" or "who are you trying to challenge."
It is a horribly structured phrase that is used when someone is acting
extra tough or sassy and is challenging the
one they are speaking to. It contains
words that are not even real in the english language and should only be used if you are feeling in an extremely ghetto and uneducated mood
Person A gets all up in the grill of person B
Person B: "Who you finna
try? Who you finna
try? I bet it
ain't me, I bet it ain't me, AHHHHHH"