When Trump ordered a missile strike against Syria in April, people shared this Trump tweet from 2013: “The President must get Congressional approval before attacking Syria-big mistake if he does not!”

This one has been making the rounds, too: “PresObama is not busy talking to Congress about Syria..he is playing golf ...go figure,” Trump tweeted in 2013. Fast forward to 2017 and Trump has already outpaced Obama’s presidential golfing rate. (Obama was a prolific golfer.*)

There’s more.

After reports that Trump is considering a massive troop surge in Afghanistan, this 2013 tweet reappeared: “Let’s get out of Afghanistan. Our troops are being killed by the Afghanis we train and we waste billions there. Nonsense! Rebuild the USA.”

“Is there a name for the eerie way that Trump subtweeted his entire presidency?” Peter Daou, a former Hillary Clinton adviser, said recently. “There’s truly a tweet for every occasion.” Various observers have compared the phenomenon to everything from mass-produced greeting cards to the elegance of mathematics to science fiction.

“Seems there’s a hypocritical Trump tweet for almost every occasion,” one Twitter user wrote. “They’re like Hallmark cards.”

And another: “His hypocrisy meter uses a Fibonacci number and it just keeps spinning into infinity through space and time...”

The appeal of reaching for Trump’s old tweets is understandable, and not just because people enjoy pointing out the hypocrisy of politicians they dislike. The medium is meaningful here, too. Rarely are schadenfreude and political commentary packaged together so neatly. Tweets are, by the platform’s very nature, succinct, atomized, and imminently shareable. Trump himself has employed the same tactic in an attempt to point out hypocrisy among his celebrity rivals.

Skipping through the linear order of events this way is also a reflection of warped time as a dominant theme in the Trump presidency—both among supporters who want to travel backward in time to Make America Great Again, and among critics who compare him to the time-traveling Back to the Future villain Biff Tannen (or worse.)

Using past tweets as present criticism isn’t just suited to Twitter’s platform, or political culture, or even outright partisanship. This approach also leverages Trump’s blustery style of attacking others as well as the richness of his particular Twitter archive, which goes back to 2009.

And in an irony that’s almost too delectable, there is the fact that so many of Trump’s past attacks against Hillary Clinton in last year’s presidential campaign were based on the premise that she was reckless with classified information—which is now the same criticism Trump faces in one of the biggest scandals of his fledgling presidency. “Crooked Hillary Clinton and her team ‘were extremely careless in their handling of very sensitive, highly classified information.’ Not fit!” he tweeted last July. (Trump’s ongoing refusal to share his tax returns is in similarly sharp contrast to this 2012 tweet: “All recent Presidents have released their transcripts. What is @BarackObama hiding?”)