BOSTON, MA - APRIL 30: Isaiah Thomas #4 of the Boston Celtics looks on during the first quarter of Game One of the Eastern Conference Semifinals against the Washington Wizards at TD Garden on April 30, 2017 in Boston, Massachusetts. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this Photograph, user is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Maddie Meyer/Getty Images)

DANG!! IT was not happy with Danny Ainge following the news that he was traded from Boston to Cleveland.

And we now have the tape to prove it.

Here’s some of the quotes from the video:

“What are you talking about?” Thomas says in a video from this summer shot by the Players’ Tribune.  “My kids [are] about to start school. Off the strength, after everything I went through, [expletive]. You’re not supposed to do that. But it’s… I mean, if that’s what he wants. Danny’s like that. 

“But I mean, I’m not trippin’. It’s just crazy that they would do that. Like, I’m not mad. I would be mad if I went to a weak-ass team. It’s like, we gonna win the Finals anyway. That’s what’s crazy, but it’s like, ‘Damn, after all I do for [Boston].’

“The city’s going to be mad as [expletive].”

Watch the full video below, warning it contains explicit language:

Click here for more.