Green’s Dictionary of Slang

(drugs) crack cocaine, esp. when in small crumbs.

1990		J. Wambaugh Golden Orange (1991) 54: Slam dunkin these little two-oh and five-oh dopers. Endin up with kibbles ’n’ bits.
2001		J. Stahl Plainclothes Naked (2002) 153: We make one stop, load up on kibble-and-bits, then we haul ass to the bitch’s house.
2008		R. Price Lush Life 27: I’m thinking let’s snatch us a head out here, take the kibble,, go up there.