Actually I imagine KG spent hours upon hours of watching BBD's game film, then he reached the logical conclusion that eventually BBD would leave him hanging on a high five in approximately 3 years.
After learning that, KG spent hours after practice with Sergeant Hulka from "Stripes" learning how to properly berate a person until bringing them to tears.
Only after he put the work in, KG found the perfect moment to preemptively strike, making BBD cry on national TV a full 2 years before BBD would leave him hanging on a high five in a preseason game.
"Its like my man Tupac said," KG elaborated when faced with the theory, "Its my life or yo life, I'ma Bomb First!"