Dallas Mavericks owner Mark Cuban was so offended by a harmless tweet aimed at future Hall of Famer Dirk Nowitzki, that he threatened Bleacher Report to take it down, which they ultimately did.

The Bleacher Report tweet that had Cuban up in arms was a video of Dirk shooting an airball with the caption "Dirk Forever." 

Upon seeing this tweet, Cuban went straight to the president of Bleacher Report’s parent company, David Levy of Turner Networks, as well as NBA commissioner Adam Silver, with his complaint and then shared the email exchange on Twitter.

Here's what he had to say in the email:

“I expect an apology immediately or you can expect me to take a very strong stand in support of one of the greatest players of all time,” Cuban wrote in an email to Levy and NBA commissioner Adam Silver. “Who the f–k thinks this is remotely acceptable and why are they working for you David?”

“This is an issue where if it’s not down immediately, I’ll communicate with the millennials in the way I know how to,” he wrote. “Your choice.”

Cuban has since clarified why he was so upset with the original tweet, telling Dallas SportsDay that he was more pissed off about the caption which he apparently deemed completely disrespectful.

Per DallasNews.com,

"I [couldn’t] care less about the video. It was the caption that made it disrespectful.”

“Dirk Forever,” alongside the embarrassing clip. “When it was up, there wasn’t a single reply saying it was funny. Just the opposite. Did you laugh? Find anyone who did? Aren’t blooper reels supposed to be funny?”

“Even now, when people are reposting it, no one is saying it’s funny,” he said. “No one is saying I missed the humor. They are just commenting about my being adamant about it coming down. Sometimes humor attempts go wrong. This was an example of an attempt gone wrong. Like I said in the email, there were captions that could have been fun. There is no one that enjoys making fun of himself more than Dirk."

“They made the mistake of picking a caption [that] was disrespectful rather than funny. If you are disrespectful to a legend, I’m standing up for him.”