Out of all of our current late-night hosts, Jimmy Fallon clearly just wants to show people a good time. Of course, that attitude drew criticism when it resulted in him petting Donald Trump’s hair during a Tonight Show interview back in September 2016. After he recently expressed regret about the now-infamous interview, President Trump targeted Fallon with both a Twitter rant and a live critique at a political rally for South Carolina governor Henry McMaster on Monday. In response, Fallon used his Monday-night monologue to return some goofy fire and, in an uncommon move for the Tonight Show host, basically call the president dumber than a box of rocks.

Explaining that…