Definitions by ThatGrammarGuyObviosly

Finna 

Is short for "Feeling to" or "I feel like"
Just the same way Gonna is short for "Going to"

I Finna go to sleep
"I feel like Going to sleep"
Finna and Gonna are not interchangable

Finna by ThatGrammarGuyObviosly January 13, 2019