(Finna) is the lazy way of saying the slang word "
Gonna" which is the lazy way of saying the
proper word "
Going To"
Johnathan: Hey Dequan, are you going to watch the Football game later on this week?
Dequan: Nah bruh, I "finna" be wit my
girl at
da movies and then my boys and we "finna" take turns
smash'in" her at my crib.