A new commercial from Nike and Foot Locker -- dubbed "Eruption" -- outlines a seldom known physical law that only applies to the basketball court: every action has a crowd reaction. The dynamic is directly proportional, meaning the greater the action, the greater the subsequent reaction. The rule is illustrated during a nighttime streetball game, in which a monster breakaway dunk causes the onlookers, Kevin Durant among them, to go absolutely bonkers. Meanwhile, the Minnesota Timberwolves' Zach LaVine, who's known to throw down an earth-shattering dunk or two, can barely muster the energy to look up from his book. Check out the video below.