For better or worse, Donald Trump vowed to shake up the political system. And having already broken with convention multiple times on the campaign trail and since winning the U.S. presidential election, the #TrumpFirsts hashtag trended on Twitter over the weekend as users recalled the traditions he’s eschewed and imagined other (sometimes dangerous) precedents that he may soon set. Here are some of the best posts from the @HashtagJones1-created game that we’ve seen so far: First president to be the last president ever.