It's just a random word, what more is there to say? A word that is said with no context what so ever, which is not supposed to be a part of conversation and is probably said just to gain attention. Woah, I guess I know a little bit about them, goddamn.
An example of a Random WordFreestyle would be -
Suggester: Black
Freestyle rapper: I rap 'cause I'm black/ all my lyrics attack/ your rhymes are just wack/ and as a matter of fact/ I'ma shoot you in the back