Marco Rubio took to Twitter to rip The Washington Post on Monday night, alleging thin sourcing by "reporters desperate for content." He started with a story by Fix boss Chris Cillizza that ruled the Florida senator and former Republican presidential candidate out of Donald Trump's veepstakes.

To be clear, neither The Fix nor anyone else needs to rely on people close to Rubio to report that he won't be joining Trump on the GOP ticket. Rubio himself said last week that he doesn't want the job. And Trump said over the weekend that he isn't considering his onetime rival.

The unnamed sources in Chris's story simply indicated that Rubio is torn about his next move — which is pretty apparent. He is retiring from the Senate in January but hasn't said what he will do next. In the midst of his tweetstorm, Rubio even appeared to suggest he might run for president again. But he hasn't made a commitment one way or the other.

Rubio sure sounds like a guy who is "a bit at sea" and "sort of betwixt and between when it comes to his next move," as Chris reported. Unless Rubio plans to list "private citizen" as his occupation on his 2017 tax return, he's going to have to get a little more specific.

And he's free to take his time, by the way. Plan A was to be president; if he hasn't figured out Plan B yet, that's totally fine. But why so angry that a journalist would point out his uncertainty?

The second story that ticked off Rubio is seven months old.

Why is Rubio venting about this story now? Who knows? But since he is, let's once again provide some clarity. Rubio says he never told anyone that he "hates" the Senate. Fine. But The Post's David Fahrenthold never reported that he did. Fahrenthold quoted a longtime friend who offered his or her own interpretation of Rubio's sentiments. That person believed Rubio had come to hate the Senate, even if he wouldn't explicitly say so.

What's more, Rubio had a chance to deny that he hates the Senate before publication. He did — and was quoted doing so.

“I don’t know that ‘hate’ is the right word,” Rubio said in an interview. “I’m frustrated.”

Rubio's position was represented from the start. But there was plenty of evidence to support the idea that he does, in fact, hate the Senate. For one thing, he had already said he wouldn't seek reelection if his White House campaign fell short. For another, he was routinely skipping votes and meetings.

“I’m not missing votes because I’m on vacation,” he told CNN around the time of the Fahrenthold article. “I’m running for president so that the votes they take in the Senate are actually meaningful again.”

Rubio concluded Monday's Twitter rant with mock imitations of The Post articles.

I'd say he was testing the journalistic waters for a possible second career, but I don't have a good source on that.