I'm fascinated by the word "I'mma." It is a contraction of four words: "I am going to." It is then followed by the infinitive form of a verb. (It would be improper to say "I'mma the store." Instead, you would say "I'mma drive to the store.")
I don't really have much more to say about this. Just that I think "I'mma" is one of the most innovative changes to English in some time.