Alec Baldwin has been playing Donald Trump on "Saturday Night Live" for months.
Trump has hated the satirical impression since the beginning, often complaining about the show he once hosted on Twitter after a new episode aired.
Saturday's episode targeted Trump's tendency to lash out on Twitter after being criticized, which he did again late Saturday.
Here's an example of how the show skewered Trump.
Just tried watching Saturday Night Live - unwatchable! Totally biased, not funny and the Baldwin impersonation just can't get any worse. Sad— Donald J. Trump (@realDonaldTrump) December 4, 2016
And here is the Trump response.
This time, Baldwin fired back, prodding Trump to release his tax returns.
Trump critics were exasperated.