Alec Baldwin was back as Donald Trump on ‘Saturday Night Live’ this weekend, in a sketch about the President-elect’s twitter habits.

But not everyone was laughing, as once again the real Donald Trump took to Twitter to voice his disproval over Baldwin's performance.

“Just tried watching Saturday Night Live - unwatchable!” Trump tweeted. “Totally biased, not funny and the Baldwin impersonation just can’t get any worse. Sad.”

However Baldwin soon hit back, telling the 70-year-old, “…@realDonaldTrump Release your tax returns and I’ll stop. Ha.”

In the sketch Trump was mocked for his over-use of Twitter, with Baldwin shown retweeting random supporters during a security briefing.

More: Alec Baldwin Claps Back At Donald Trump After He Slated 'Saturday Night Live'

At one point, Trump retweets a 16-year-old high school student named Seth and tells his adviser Kellyanne Conway (played by Kate McKinnon): “I just retweeted the best tweet.

"I mean, wow, what a great, smart tweet. This could not wait. It was from a young man named Seth. He’s 16. He’s in high school. And I really did retweet him. Seriously. This is real.”

Conway then tries to explain Trump’s Twitter habits by saying: “You see, there is a reason actually that Donald tweets so much.

“He does it to distract the media from his business conflicts and all the scary people in his cabinet.”

But Baldwin’s Trump responds: “Actually, that’s not why I do it. I do it because my brain is bad.”

More: Alec Baldwin Makes His 'SNL' Debut As Donald Trump

Trump has made no secret of his hatred for Baldwin’s impression of him, which started in October, during the run-up to the US election.

In November Trump tweeted: “Watched parts of @nbcsnl Saturday Night Live last night. It is a totally one-sided, biased show - nothing funny at all. Equal time for us?”

To which Baldwin responded: “Equal time? Election is over. There is no more equal time. Now u try 2 b Pres + ppl respond. That's pretty much it.”