Cleveland Cavaliers guard J.R. Smith heard it all from the Boston Celtics' home crowd in Game 2, and Al Horford's sister, Anna, is sharing the same fire as the fans on social media.

Late in the fourth quarter, J.R. Smith committed a flagrant one foul on Horford as he pushed the latter while in mid-air. It was a dangerous play and Marcus Smart went over in anger to Smith as he defended his teammate who was put at risk.

The crowd erupted with NSFW jeers directed at Smith, who can only smile while being rained on with profanities from fans. Horford's sister also tweeted out in disgust which she then chalked to “emotions clearly running high.”

After the game, Smart spoke with the media and called out Smith for his “dirty” antic. This isn't the first time Smith got himself caught in the middle of the Boston's crowd's anger. Back in 2015, his backhand strike on then-Celtics forward Jae Crowder proved costly as the latter injured his knee after falling awkwardly because of the hit.

Indeed, emotions were running high during the game as the Celtics badly want to eliminate the Cavs after years of being owned by LeBron James and co. in the postseason. They now lead 2-0 and are looking as sharp as ever heading into Games 3 and 4 in Cleveland.