The sound of a bullet shot as defined by rapper, School boy Q. It is a trademark sound made by him, and is sampled in Kendrick Lamar's song "M.A.A.D. City" and is part of his verse in Childish Gambino's, "Unnecessary".
"If pirus and crips...all got along
they'd probably gun me down by the end of this song
seems like the whole city go against me
everytime im in the street i hear
YAWK! YAWK! YAWK! YAWK!"
-M.A.A.D. City
How a New York City guy (like myself) pronounces "New York"---nothing to make fun of, it's just how we speak, just as natural to us as the "Bahst'n" of a Bostonian or the "roof" (pronounced with the "oo" as in "book") of a person from Los Angeles.