Green’s Dictionary of Slang

a cry of warning, e.g. from a street dealer’s lookout at the approach of the police.

1995

(con. 1985–90) P. Bourjois In Search of Respect 140: [snapping to attention and motioning for Primo to hide the purse with crack vials as a roving police car slowed down [...] ] Yo-yo-yo-yo! Static-static-static!