Behavior isn't one of J.R. Smith's top priorities. It isn't on Twitter and it sure as hell isn't on the court, which is something Boston's Jeff Green found out the hard, I-just-got-posterized way. Smith gave us one of the NBA Playoffs first highlights when he threw it down on the Celtics. It's the start of a glorious Playoff Saturday.

RELATED: What One Knicks Fan Would Do If the Knicks Won the NBA Finals

[via YouTube]