But before he skipped out on the social media site, the 55-year-old actor defended his pregnant wife Hilaria, posting some fighting words for a reporter who accused Baldwin's misses of tweeting during James Gandolfini's funeral.
While the former 30 Rock star has unleashed his Twitter fury before, this may be his biggest Twitter disaster yet.
But don't worry, Alec, you're in good company. Here are seven more stars who have had a social media meltdown:
1. Justin Bieber: After the singer found himself the subject of intense tabloid criticism following a particularly bad week, he took to Instagram to slam the "countless lies in the press," rehab rumors and Lindsay Lohan comparisons. "if Anyone believes i need rehab thats their own stupidity lol I'm 19 with 5 number one albums, 19 and I've seen the whole world. 19 and I've accomplished more than I could've ever dreamed of," he wrote in a particularly lengthy rant. He deleted the original post shortly after and apologized to the Mean Girls star, "My post was only up for a few minutes but I realized right away that what I said at the end was wrong and distracted from what I was trying to say," he clarified.
2. Amanda Bynes: Another day, another bizarre tweet from Bynes. And this meltdown seemingly has no end in sight. The 27-year-old star has expressed her desire for Drake to murder her vagina (and most recently asked Mac Miller to jump on her d--k) , called countless stars "ugly" and threatened to sue any tabloid posting a "Photoshopped" pic of the embattled actress. She's also tweeted a number of questionable selfies, defended herself after her recent arrest and lashed out at a number of stars who expressed their concerns over her behavior.
3. Chris Brown: Where do we begin? The controversial pop star is notorious for tweeting-then-deleting his personal opinions, and he most recently took to Twitter to defend himself in the wake of recent charges for hit-and-run and driving without a vaid license. "It's not a hit and run if u get out the car, exchange information (who has NO DAMAGE to either cars). This is really ridiculous," read the original tweet, which was followed by a number of others. He even temporarily changed his profile pic to a photo of the person's car he hit.
4. Rihanna: Ri-Ri's famous for posting her endless sexy selfies, but her feed took a turn for the worst this week after a reporter called her a "toxic role model." And it's safe to say the "S&M" singer was less than pleased. "Role model is not a position or title that I have ever campaigned for, so chill wit dat," she retorted. "Toxic was cute. Poisonous Pop Princess had a nice ring to it, just a lil wordy!" Well, can't say she's dishonest.
5. Nicki Minaj: The Barbz is never afraid to speak her mind (whether it be on American Idol or the social media site), but she really lost her cool last year after fansite NickiDaily.com purportedly leaked music from her album. "Like seriously, its but so much a person can take. Good f--king bye," the "Pink Friday" rapper wrote before deleting her account à la Alec. No surprise, she was back and tweeting up a storm just one week later.
6. Shia LaBeouf: How appropriate that our next star's meltdown revolves around his professional relationship with Alec Baldwin! The 27-year-old Lawless star posted a series of private emails that were exchanged between himself, Orphans director Daniel Sullivan and former costar Alec after he abruptly exited the Broadway show due to "creative differences." LaBeouf seemingly tried to portray Alec in a negative light by blasting out the emails on the social media site, suggesting the Hollywood vet was less than dedicated to the performance. The Nymphomaniac star was subsequently replaced by Tom Sturridge, but he still had the guts to sit front row at the preview show.