Short for Kind Bud. A suburban type of weed smoked only by north olmsted gangstas. Makes them feel like they are ghetto so they buy and or smoke it every day. The high usually lasts 2 min and is accompanied by a large painful headache. Usually the weed causes the persons to become gay and have butt sex with each other. Afterwards they wake up and feel nuttin but anal pain. In short Kay b is for ambercrombie gangsters only so any real niggas shouldn't touch it cuz it'll indeed kill them.
You got da kay b nigga?
O Fo Sho dawg, ive practiced smokin on the rizzeal.