Warriors' Jimmy Butler shouts NSFW insult in Dillon Brooks' face

The first-round series between the Warriors and the Rockets has been a hotbed for fiery tempers.

Game four has ratcheted up the intensity and the cameras captured an interesting interaction between Golden State's Jimmy Butler and Houston's Dillon Brooks. 

After Brooks got in an altercation with Draymond Green and Steph Curry, he and Butler were at the free throw line.

Butler had some choice words for the Rockets' forward and it lip readers took to social media to show the contents of the conversation.

Brooks looks like he questions Butler's assessment and heartily laughs off the insult. 

Butler kept going until a referee stepped in to break up the tense conversation. 

That wasn't the end of the confrontation.

Immediately after the free throws, both players were fighting under the basket and it led to Brooks falling to the ground. 

The Warriors claimed flop but some Rockets' fans thought Butler choked Brooks.

Jimmy Butler chokes Brooks. Ref saw everything. nothing happens. pic.twitter.com/t48MaOhQiL

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It was just one of many incidents in just the first half Monday night. 

Butler is returning from a one-game absence after suffering a pelvic injury. Brooks has scored in double figures every game this series along with his defensive contribution. Both players are key and can't afford to miss time for suspension.

But in a series with these two and Draymond Green, there's no telling what could happen next.