Etymology
Onomatopoeic. Lexicalized from Riverdale Shawty’s feature in the original mixtape version of Waka Flocka Flame’s 2009 song O Let's Do It uttering Even got the spots (Scurt! Scurt!) off the block. Then in late 2013 Chief Keef picked up the interjection, alleged to have circulated sporadically in Afro-American circles since the 1990s, for his piece Chiefin Keef, his line Pull off in that foreign, skrr skrr skrr, she thought she seen a beast, and many other lines in his further career, to be imitated by other rappers of New York and soon the whole world, which embraced it as a fashion symbol printed on apparel.