The most important rule was that if Garnett felt the need to cuss, he needed to hit the “cuss button.” This isn’t some imaginary thing, there is an actual in-studio button that he’s supposed to hit when he feels a curse coming on.

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Look at it in action here:

But when Garnett was in the process of responding to a Twitter user Thursday night, the cuss button was a little late to react.

Oops.